Polartec® AirCore™ | Inside the Future of Breathable, Sustainable Cycling Performance Gear

Discover Polartec® AirCore™ — the revolutionary fabric that’s lightweight, breathable, PFAS-free, and made from recycled materials, designed to keep you dry from the inside out.Watch interview on YouTube: https://youtu.be/-EFOAr534V4As the industry’s first advanced air-permeable laminate, AirCore™ combines stretch, windproofing, and water repellency with nanofiber technology that actively vents sweat without sacrificing protection from the elements.In this episode, Ramesh Kesh, Senior Vice President at Milliken & Company and Business Manager at Polartec, joins Steve Smith, Castelli Brand Manager, to share how this breakthrough came to life, and why it could redefine winter cycling gear for years to come.Together, they unpack the science, the challenges, and why Castelli’s new winter collection — launching September 9, 2025 — marks a turning point in performance cycling apparel. From lab testing to real-world rides, discover why AirCore™ is set to become the new benchmark in cycling performance.– LINKS –Castelliwww.castelli-cycling.com/polartec-aircorehttps://www.castelli-cycling.com/II/en/custom/full Polartec®:www.polartec.com/fabrics/weather-protection/aircore– GUESTS –Ramesh Keshhttps://www.linkedin.com/in/rameshkeshSteve Smith⁠www.instagram.com/smittystuff/⁠CHAPTERS00:00 Intro03:56 Quick-Fire Round07:16 Why New Fabric Was Needed13:26 Engineering Breathability19:41 Inside the AirCore™ Fabric25:20 How Movement Activates Performance28:03 Removing PFAS chemicals, 30:33 Real-World Performance33:26 Breathability & Numbers37:50 Waterproofness & Water Column Explained40:04 Soudal Quick-Step41:27 Product Collection45:52 Sustainability & The Future49:03 AirCore Setting a New Standard52:11 Looking Ahead52:54 Sum up AirCore53:36 Outro Hosted on Acast. See acast.com/privacy for more information.

Riding in the summer heat can turn a dream ride into a survival mission if you don’t fuel and hydrate correctly. In this episode, we're joined by returning guest and sports performance nutritionist, Dani Hofstetter, to break down how to fuel and hydrate smarter for hot weather training and racing.From carb absorption to sodium losses, cramping, gut tolerance, sweat testing, and post-ride recovery, Dani shares practical strategies to keep you fast, fueled, and functional when temperatures soar past 30°C. You’ll also hear listener questions answered on topics like whether to switch to plain water mid-ride, how to balance solids and liquids, and how to adapt fueling for long, unsupported gravel rides. Packed with pro tips and real-world examples from long distance races like an Ironman, Badlands, Ötztaler, to the Cape Epic, this is your ultimate hot-weather fueling guide.CHAPTERS00:00 – Intro04:21 – Quickfire round08:32 – Listener Q: Should you switch to water in the heat?10:38 – Carb concentration adjustments based on temperature11:10 – How under-hydrating backfires: gut distress & thicker blood12:46 – Subtle signs of dehydration14:29 – Listener Q: Does craving water mean you've overdone the mix?15:54 – How to calculate your sweat rate17:35 – Setting up hydration for long unsupported ultras18:53 – Balancing carbs, fluid, and electrolytes19:16 – Listener Q: How many carbs/hour for amateurs vs pros?20:28 – Adjusting fueling plan in the heat21:15 – Listener Q: Nutrition for cramp-prone riders22:14 – Why dehydration is a bigger cause of cramps than magnesium23:46 – Listener Q: Solids vs liquids in hot weather24:44 – Is gel + water better than drink mix?25:33 – What to pick at a hot feed zone: Coke, fruit or salt?27:21 – Palate fatigue and why taste matters29:33 – Listener Q: Are sweat/sodium tests really helpful?32:13 – Sodium vs salt: key numbers explained34:06 – Replacing sodium: what really matters35:14 – Should you add salt to your bottles?36:51 – Two key hydration rules every rider should know37:22 – Listener Q: Post-ride recovery nutrition in the heat38:24 – What to drink and eat after hot rides39:35 – Why recovery is the "work after the work"41:06 – Listener Q: Caffeine and spicy foods in hot weather42:15 – Listener Q: Carrying extra hydration for long gravel rides43:22 – Preloading sodium: how and when44:56 – Listener Q: Training differently in a heat wave45:56 – Final take: consistency, fatigue, and training timingLINKSDani Hofstetter⁠Website⁠⁠Instagram⁠Host: ⁠⁠⁠⁠⁠⁠Soren Jensen⁠⁠⁠⁠⁠⁠Castelli⁠Castelli's Hot Weather Collection ⁠SEND US YOUR QUESTIONSIf you want your questions to be answered on air, be sure to submit your questions by sending us a message on social media or by email to⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠[email protected]⁠⁠ Hosted on Acast. See acast.com/privacy for more information.

In this episode, we sit down with one of the brightest young talents in professional cycling — Valentin Paret-Peintre. At just 24, he’s already claimed stage victories at the Giro d’Italia, the Tour of Oman, and made history as the fifth Frenchman ever to win atop Mont Ventoux during his maiden Tour de France.Join us for a relaxed and insightful conversation recorded during pre-season camp, as Valentin opens up about life with Soudal Quick-Step, his favorite alpine climbs, his power-to-weight secrets, and how growing up in a cycling-obsessed family shaped his journey.If you're a fan of the high mountains, French alpine gems, and the inner mindset of a pure climber – this one's for you!The interview was recorded as a friendly chat at the beginning of the season, following a product feedback session. – LINKS –Valentin Paret-Peintre Host: ⁠⁠⁠⁠⁠Soren Jensen⁠⁠⁠⁠⁠ Climbs:Col de l'Arpettaz (Ugine)Col de la Colombiere (Cluses)Col des Aravis (Flumet)Mont-Salève– CHAPTERS –00:00 – Quickfire intro00:39 – Welcome & Valentin’s rise: Giro stage win to Ventoux glory01:45 – Riding with the Wolfpack: New chapter with Soudal Quick-Step03:13 – Settling in with the team & first impressions from training camp04:35 – Why the Giro d’Italia is his favorite Grand Tour05:39 – Growing up in Haute-Savoie & descending skills06:49 – Favorite local climb: Col de la Colombière08:08 – Riding for joy, peace & scenery — not always for coffee09:40 – Reflections on mountain solitude & wild landscapes10:51 – Hidden gem climbs: Col de l’Arpettaz and others11:49 – What makes a world-class climber: More than just numbers13:27 – Beating personal records at the Giro & Tour de Suisse15:21 – In-the-saddle vs out-of-saddle: His climbing technique16:09 – Bodyweight, gym work & nutrition18:06 – Training efforts: Torque work, over/unders, and VO2 sets20:32 – Training solo vs in groups & life in Chambéry22:11 – Annual New Year's ride around Lac Léman tradition22:58 – Aero obsession: Race suits vs jersey/shorts24:23 – Castelli product insights & racing with innovation25:21 – First impressions of the Sanremo S8 race suit26:16 – Why he joined Soudal Quick-Step & learning from Remco & Landa29:51 – Not ready to lead just yet — embracing a support role31:51 – Eyeing the Tour de France debut in 202533:02 – On racing the Tour as a French rider: Personal dream34:06 – Favorite Tour climb: Col du Galibier and its magic36:08 – Favorite off-season meal? Spaghetti alla bolognese 🍝36:41 – Outro & thanks Hosted on Acast. See acast.com/privacy for more information.

They were just two kids from Wortegem, riding bikes after school, never dreaming they’d one day end up in the pro peloton together.In this episode of the Castelli Podcast, we sit down with Belgian sprint sensation Tim Merlier and his lifelong friend and trusted lead-out man Bert Van Lerberghe, a duo bonded by years of shared rides, muddy cyclocross circuits, and quiet ambition.From their humble beginnings to the world’s biggest races, Tim and Bert take us inside their journey—through the chaos of sprint stages, the grit of gravel racing, and the deep trust that powers their performance in the pro peloton. They open up about what it means to represent Belgium, the Castelli gear that gets them through the toughest days, and the unspoken connection that only two decades of friendship can build.This is more than a story about speed. It’s a story about growing up together, daring to dream late, and discovering that the best victories are the ones you chase side by side.Chapters00:00 Intro02:38 Tim Merlier’s Journey06:26 Bert Van Lerberghe’s Journey09:02 Amateur Belgian Cycling13:20 Gravel Racing16:40 Bert’s Strengths and Weaknesses19:22 Tim’s Strengths and Weaknesses20:37 Rapid Fire Round of Questions20:45 First Castelli Memory21:49 Favorite Castelli Winter Product23:39 Dream Races to Win One Day27:32 Rapid Fire36:10 The Wolfpack Team Dynamics36:43 Ending– LINKS –⁠⁠Tim Merlier⁠⁠⁠⁠Bert Van Lerberghe⁠⁠Host: ⁠⁠⁠⁠Soren Jensen⁠⁠⁠⁠SEND US YOUR QUESTIONSIf you want your questions to be answered on air, be sure to submit your questions by sending us a message on social media or by email to⁠ ⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠[email protected]⁠⁠ Hosted on Acast. See acast.com/privacy for more information.

In this special Tour de France episode, we're joined by two of the sharpest minds in performance cycling: Koen Pelgrim, Head of Performance at Soudal Quick-Step, and Steve Smith, Castelli Brand Manager and driving force behind the Scorpion’s aero innovation.Recorded just ahead of the Tour’s Grand Départ, the episode dives deep into the world of wind tunnel testing and the relentless pursuit of marginal gains.From Tim Merlier’s Tour stage-winning Sanremo S Speed Suit to Remco Evenepoel’s time trial suits—including the one he wore while storming to victory in stage five’s Tour de France time trial.Koen and Steve pull back the curtain on testing protocols, fabric breakthroughs, rider-specific positions, and the surprising results that prove: what looks fast isn’t always fastest.Whether you're a marginal gainer, tech nerd, or just obsessed with the Tour like we are—this one’s for you.Enjoy!CHAPTERS00:00 Intro03:18 Behind the Scenes of Wind Tunnel Testing03:55 Tim Merlier's Sprint Suit11:27 Fast Feet Aero Socks12:09 Refining Remco's Time Trial Suit14:50 Remco's New Time Trial Position17:03 Aero Suit Testing with Soudal Quick-Step18:08 Adapting Suits for Different Cyclists20:17 Different TT Suits for the Uphill Time Trial20:48 EndingLINKSCastelli Speed Shophttps://www.castelli-cycling.com/Speed-Shop/c/Speed-ShopCastelli Pro Shophttps://www.castelli-cycling.com/PRO-SHOP/c/Pro-ShopGUESTS⁠Koen Pelgrim, Head of Performance at Soudal Quick-Step⁠⁠Steve Smith, Castelli Brand Manager ⁠ Hosted on Acast. See acast.com/privacy for more information.

Join us as we dive into the cutting-edge world of aerodynamic cycling apparel with Steve Smith, Castelli Brand Manager, Lifelong Marginal Gainer. From the evolution of the iconic maglia rosa for the Giro d’Italia to the latest innovative firsts, Steve shares how rider feedback, wind tunnel testing, and meticulous design come together to create high-performance gear.We explore the behind-the-scenes logistics of outfitting pro teams, the development process inside Castelli’s Speed Shop and Pro Shop, and how amateur cyclists can benefit from the same technology. Tune in for a look at where aero clothing is headed—and Castelli’s role in shaping its future.CHAPTERS00:00 Intro04:40 Amount of Clothing Supplied to Giro Race Leaders12:24 Sanremo 8S Speed Suit14:03 Tailoring Suits for Performance and Fit16:25 Optimized Gear for Specific Rider Positioning19:53 Low-Hanging Fruit for Maximum Performance23:30 Free Aero S Bibshorts28:08 Free Aero Prototype Testing31:54 PoliMI Wind Tunnel – Politecnico di Milano33:55 Custom Program, Speed Shop, and Pro Shop36:42 Aero Race 8S Jersey: Design and Functionality41:42 Aero Gains: Performance Comparisons47:08 Future Frontiers in Aero Clothing53:13 Giro d'Italia, Stage 15, Passing by Castelli HQ55:09 WIN a Singed Maglia Rosa! 55:41 Ending LINKSCastelli Speed Shophttps://www.castelli-cycling.com/Speed-Shop/c/Speed-ShopCastelli Pro Shophttps://www.castelli-cycling.com/PRO-SHOP/c/Pro-Shop– GUEST –Meet Steve Smith: Castelli’s Brand Manager & Lifelong Marginal Gainer! From racing bikes in Portland to leading innovation at Castelli, Steve Smith brings a deep passion for performance. In this episode, he shares insights on wind tunnel testing and the game-changing gear behind the Giro d’Italia leaders. Dive into the tech, the strategy, and the gear that keeps the pros ahead.CONNECThttps://www.instagram.com/smittystuff/– HOST –Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.CONNECT ⁠www.linkedin.com/in/sjensen77/ Hosted on Acast. See acast.com/privacy for more information.

Dive into the thrilling history of the Giro d’Italia and its most iconic symbol—the Maglia Rosa. From its origins in 1909 to the groundbreaking innovations Castelli introduced to the peloton, we celebrate the legends, the legacy, and the evolution of cycling’s most coveted jersey.Discover how the race began, why pink became the color of victory, and how Castelli helped revolutionize performance cycling gear through bold innovation. From historic champions and unforgettable moments to the evolution of aerodynamic apparel, this episode traces the legacy of the icons who shaped the sport.CHAPTERS00:00 Intro02:10 The Origins of the Giro d’Italia03:33 The Early Winners04:15 The Maglia Rosa Is Born06:31 Giro d’Italia: A Proving Ground06:58 Top GC Winners and Most Victories07:54 La Maglia Rosa09:37 Castelli’s Innovative Firsts11:54 The Legacy of Castelli in the Giro d’Italia16:34 Ending– LINKS –https://www.castelli-cycling.comhttps://www.instagram.com/castellicycling– HOST –Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.CONNECT ⁠www.linkedin.com/in/sjensen77/Music | Slipstream Music, RCS  Hosted on Acast. See acast.com/privacy for more information.

In this episode, we sit down with Samuel Sánchez, a legend of the sport and Olympic gold medalist, to reflect on his remarkable career and the evolution of the sport over the past three decades. Samuel takes us through his journey from a young aspiring cyclist to Olympic champion, sharing insights into the highs and lows of his career. He talks about his 18 years in the pro peloton, racing for just two teams, the differences in team dynamics from Euskaltel - Euskadi to BMC Racing Team, and the immense impact of winning an Olympic gold medal.We also dive deep into the history and innovation behind some of Castelli’s pioneering products, exploring iconic items like the Sanremo Speed Suit, the Gabba R jacket, and the first Aero Race Jersey—each a game-changer in cycling gear. Samuel offers his perspective on the evolution of cycling apparel and the technical advancements that have revolutionized the sport, particularly in aerodynamics.Samuel shares the mission and passion behind his Cycling Academy, which focuses on developing young talent while balancing education and sport. We also explore the competitive landscape of cycling today, the rise of gravel racing, and how resilience and instinct are just as important as data and numbers in the world of racing.Tune in for an inspiring conversation about the values of cycling, the importance of youth development, and how the lessons learned on the bike can be applied to all aspects of life.This is an episode you don’t want to miss!CHAPTERS00:00 Intro 03:39 Rapid Round of Questions05:44 Gabba R09:05 Aero Jersey10:51 Sanremo Speed Suit 15:04 Aero Shoe-Covers  15:56 Body Paint 4.0 TT Suit16:41 First Castelli Memory18:26 Castelli History20:15 Transitioning to BMC25:05 Olympic Gold 30:35 Building the Future. Cycling Academy39:42 Gravel Racing, Sea Otter50:51 Young Superstars of the Sport58:23 Samuel's Journey into Cycling   01:04:27 Ending– GUEST –Samuel Sánchez, Spanish 2008 Olympic gold medalist and former pro cyclist known for his climbing prowess and tactical racing. A Tour de France and Vuelta a España podium finisher.CONNECT⁠https://www.instagram.com/soysamusanchez/⁠– HOST –Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.CONNECT ⁠www.linkedin.com/in/sjensen77/ Hosted on Acast. See acast.com/privacy for more information.

Yves Lampaert is more than just a Roubaix warrior—he’s a farmer’s son with deep Belgian roots, a love for tractors, and a passion for the Queen of the Classics. In this episode, we go beyond the finish line to explore the brutal beauty of Paris-Roubaix, Yves’ rise through the ranks at Soudal Quick-Step, and the surprising parallels between farming and cycling. From Tour de France yellow jersey glory to muddy cobbles and homegrown veggies—this is Yves Lampaert like you’ve never heard him before.CHAPTERS00:00 Intro01:27 Yves Lampaert: A Cyclist's Journey02:52 The Evolution of Cycling03:49 The Pressure of Being a Belgian Cyclist10:33 The Support of Fans and Community12:30 Foul Weather Gear: Essential for Cyclists15:26 Career Progression in QuickStep Team18:53 Balancing Team Roles in Cycling19:44 The Impact of Crashes on Performance22:41 Racing Roubaix in Wet vs. Dry24:03 Favorite Cobble Sector and Velodrome Experience26:55 Being Part of the Wolfpack27:56 Memorable Wins and Achievements34:55 Farming and Cycling: Parallels in Life39:46 The Importance of Family and Tradition42:40 Nutrition and Training in Modern Cycling45:52 Advice for Young Cyclists50:15 Cultural Insights: Flemish Language and Cycling– GUEST –Yves Lampaert is a professional Belgian cyclist known for his strength in the classics and time trials. Born on April 10, 1991, in Izegem, Belgium, he rides for the UCI WorldTeam Soudal Quick-Step. Lampaert has made a name for himself with his gritty performances in cobbled races like Paris-Roubaix and has been a consistent national time trial champion. One of his career highlights came in the 2022 Tour de France when he surprised the field by winning the opening time trial in Copenhagen, claiming the coveted yellow jersey. A former judo practitioner, Lampaert brings a tactical and tenacious approach to the road.CONNECThttps://www.instagram.com/yveslampaert/https://www.instagram.com/soudalquickstepteam/– HOST –Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.CONNECT ⁠www.linkedin.com/in/sjensen77/ Hosted on Acast. See acast.com/privacy for more information.

This week, we bring you an inspiring story of resilience, talent, and the relentless pursuit of a dream. Our guest, Kim Le Court Pienaar, is a rising star in the Women’s World Tour, proving that it’s never too late to chase greatness.When Kim turned pro, many riders have already made their mark—Kim wasted no time in doing the same. In her debut season, she secured a stage win at the Giro d’Italia Women, raced in two Grand Tours, and represented her country at the Paris Olympics.In this episode, we dive into Kim's remarkable journey—from mountain biking in Mauritius to competing on Europe’s most unforgiving roads. Kim shares her firsthand experience of the Tour of Flanders, the energy of De Ronde, and what it’s really like to race the Monuments.Let’s dive in!CHAPTERS00:00 Intro03:15 2024 Overcoming Injuries and Challenges07:14 First season in WT12:15 Transitioning from Mountain Biking to Road Racing17:49 Race Goals19:49 First Experience in the Classics and Learning Curve27:55 Memorial Tattoo33:15 2024 Olympics, National Pride38:18 Riding in Mauritius44:21 Other Sports45:22 Big Brother, Inspiration48:10 Top-3 Mauritian Food50:41 Ending– GUEST –Kimberley (Le Court) Pienaar is a Mauritian cyclist riding for AG Insurance-Soudal. Born in 1996, Kim has won most of the top ultra MTB events she has competed in and has placed in the top 10 in most UCI events, showcasing her versatility across disciplines. She is known for her strong climbing ability and endurance.CONNECTwww.instagram.com/kimlecourtwww.instagram.com/aginsurancesoudal– HOST –Søren Jensen, Global Marketing Manager at Castelli, has worked for this iconic brand since 2006. He usually rides backroads and dirt trails, testing new gear in the Italian Dolomites. If you can't find him there, check the Castelli Headquarters in Fonzaso.CONNECT ⁠https://www.linkedin.com/in/sjensen77/ Hosted on Acast. See acast.com/privacy for more information.