Indoor Trainer Block Color:Black The Kask Nirvana helmet is

The Kask Nirvana helmet is engineered for cyclists who demand top-tier performance

700 x 25 size for agile handling on road and commuter bikes

Dominate the course with the Rudy Project Wingdream Aero Helmet

Machine washable

easy-to-drink texture that won’t weigh you down

Indoor Trainer Block Color:Black The Kask Nirvana helmet isONLINE ONLY NOT IN STORE We set out with the goal to build the most functional front wheel block to help you maximize your indoor training. By accommodating 700c 29er tires, 3 heights to fit every trainer, and a webbed grip bottom we are proud to say that the KOM Cycling indoor trainer block is the best on the market.