Built For Athletes 25L Hero 3.0 Backpack - Black BackInStock-17-07-2026 Tight fit wears next to

Tight fit wears next to skin

The choice of some of Castelli’s pro riders

HIDDEN CLAMP

groundbreaking innovation of a 3D printed midsole with a new upper construction and a Continental outsole for extra grip

Recommended for neutral pronators

Built For Athletes 25L Hero 3.0 Backpack - Black BackInStock-17-07-2026 Tight fit wears next toMeet the daily fitness backpack engineered to support you on any fitness journey. Crafted with elite and everyday athletes in mind, it's rock solid, has a 25L capacity, and features a tactical, lasting design that helps you push your limits without compromise. With ultra durable, weather resistant materials and industry leading hardwarewe've got your back no matter what. One backpack for your essentials. Built by athletes, for athletes. Features: 25L