arai corsair x dani samurai 2 helmet Corsair-X 3 Medium Being able to see the shield mechanism allows for easier shield change Arai Corsair-X Dani Samurai-2 Black

While these features are all well and good, we think the main selling point of a smart bike is the fact that it takes wear and tear away from your bike and components

Signs a helmet is TOO BIG: Helmet may fall onto the head with little resistance Noticeably loose around the crown of the head Eyes are located near the top of the helmets viewpoint Helmet can move independently of the riders head, no pulling on the skin when helmet is moved up/down and side-to-side Signs a helmet is TOO SMALL: Helmet will be extremely difficult to put on Likely to cause immediate pressure points Eyes are likely located lower within the helmets viewpoint Signs a helmet fits PROPERLY: Helmet may take some effort to slide over head Helmet should fit snugly around the crown of the head, without overwhelming pressure Eyes are located in the center of the helmets viewpoint Rotation Tests that must be performed: STEP 1 Securely fasten the chin strap Place your hands on the back of the helmet Try to push the helmet off by rotating it forward STEP 2 Place your hands on the front of the helmet Try pushing it off by rotating it rear-ward RESULTS: With the correct size helmet, there should be LITTLE MOVEMENT, and the helmet should stay SECURELY IN PLACE.

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(I also wear a Medium in the Smith Vantage, which is listed as 55-59cm.) I tried the Small (53-54cm), but couldnt bear how tight it felt