Adjustment: They feature tool less reach adjustment

35mm diameter

Helmets do not get much more feature-packed than this

includes spacers for 31

lockout in two positions (open / lock)

POC Crane MIPS Helmet - XL-2XL - Matte Black Ignore Wholesale Tier 1 Brand Rule Adjustment: They feature tool lessIdeal for Dirt Jump, BMX, Street, and urban riders with its understated looks and a lightweight and highly durable, dent resistant outer shell. The Crane features an innovative dual density liner for optimum protection against a wide range of impact forces and the addition of MIPS improves rotational impact protection. Who's this item for: Ideal for Dirt Jump, BMX, Street, and urban riders looking for a skate style helmet with good ventilation and