An aerodynamic road bike helmet that is above all extremely fast but also surprisingly light, pleasantly cool and extremely comfortable.

When speed is your top priority and every watt counts, you'll want to rely on a helmet that cuts through the wind and gives you valuable seconds. The Ballista is Trek's fastest and most aerodynamically advanced helmet.

The Ballista is light, cools effectively, is comfortable to wear and integrates Mips Air technology for even more safety.

- Save important watts and gain crucial seconds with Trek's fastest and most aerodynamic helmet
- This aero helmet's outstanding ventilation system keeps you surprisingly cool and comfortable
- The Mips Air System is lightweight, cools effectively and improves the comfort and protection of the helmet
- With just one adjustment cable, the BOA Fit System ensures an all-round perfect fit
- Rubberized holder holds the sunglasses securely
- Bevelled front edge increases the field of vision when sitting in a strongly forward leaning position
- Our Crash Replacement Guarantee provides free replacement if your helmet is damaged in a fall within the first year from the date of purchase

- Circumference: 51-57cm (size S), 54-60cm (size M), 58-63cm (size L)
- Retention system: BOA
- Padding material: Moisture-wicking padding
- Buckle type: Light buckle
- Scope of delivery: Crash Replacement Guarantee, NoSweat padding and storage bag
- Weight according to the manufacturer: 255g (size M)

(Translated with Google Translate)