Troy Lee Designs A3 Mountain Bike Helmet with MIPS, Medium/Large

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Experience unparalleled comfort with the A3 mountain bike helmet, a new benchmark in premium mountain bike helmets. Boasting luxurious comfort and patent-pending innovations, this helmet provides exceptional coverage and ventilation to keep you cool even on the most grueling climbs. The B-Series MIPS system offers an optimal 360-degree fit, maximizing the features built into the A3.

The TLD Sweat Glide System, featuring carefully designed EVA wicking foam behind the comfort liner along the brow, effectively directs sweat away from your eyes and optics, ensuring a distraction-free ride. With a 3-Way Magnajust visor and a comfort liner that sets a new standard, this helmet is the most comfortable we've ever made.

Cutting-edge safety technologies, including MIPS, industry-first EPP (high-speed) and EPS (low-speed) impact protection, ensure your well-being on the trails. Backed by an impressive 11-year warranty, the A3 helmet also includes a breathable mesh-paneled bag for convenient storage and transport.

Engineered for maximum airflow, the A3 boasts an unparalleled 24 vents, the most of any half-shell helmet in our lineup. This exceptional ventilation system keeps you cool and comfortable, even on the most challenging descents.

Troy Lee Designs, a brand with 40 years of racing heritage, has created the A3 helmet for the world's fastest racers. Trusted by the pros, this helmet is the pinnacle of comfort, safety, and performance.

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