Ballista MIPS Bike Helmet Waterproof so you can save your

so you can save your dish soap for the dishes and your shampoo for the shower

Leave the backpack at home or make your load more manageable by mounting your tube

Perfect for gearheads

Quickly folds down for storage and transport with a smooth-operating leg support system that pulls both legs up in one simple motion

Ballista MIPS Bike Helmet Waterproof so you can save yourWhen speed is your top priority and every watt counts, reach for the helmet that'll cut through the wind to save you seconds. Ballista is Trek's fastest, most aerodynamically advanced helmet. Ballista is light, cool, comfortable, and engineered with a fully integrated Mips Air safety system that's designed to help keep you safer.