Aero Calf Size:XS/S Keep your valve core safe

Keep your valve core safe whilst filling

Comfortable carrying strap for easy transport

Intended for use with Butterfly Free Chack (the Butterfly Remover is not guaranteed to work on all rubbers)

Volume: 25 L / 1516 cu in (set)Weight: 830 g / 1

Aero Calf Size:XS/S Keep your valve core safeAvailable Spring 2026 Developed in collaboration with our elite triathletes, the Aero Calf Sleeves are designed with aerodynamic, thin and comfortable fabric for optimal performance. With a non compression silicone grip at the top, they stay securely in place under a wetsuit during the swim leg and seamlessly transition to the bike leg. Aerodynamic: Its smooth, thin fabric offers exceptional comfort. Composition: Elastane (Spandex): 20 %, Polyester :