The Obex SPIN is where lightweight construction meets top-end safety. SPIN (Shearing Pad INside) technology has been used for added rotational impact protection. In-mould construction with an ABS top shell keeps the weight down & adds protection where needed most. Active venting allows airflow to be altered with ease & the size adjustment system provides a tailored fit. Size Guide Small Medium/ Large X-Large 51-54cm 55-58cm 59-62cm Click here for more information on our Size & Fit Guide Venting: Active Sizing System: Adjustable Weight: 450g Construction: Hybrid Safety standard: e N 1077 Class B, ASTM F 2040 Additional Safety POC's SPIN (Shearing Pad INside) technology uses silicone bladders within the liner which can move independently to the shell to reduce, & dissipate, the forces on the head created by rotational impacts. Venting Precise & fully adjustable ventilation can be altered to meet individual needs & weather conditions. Sliding vent covers allow the user to open or close helmet ventilation whilst integrated vents at the front of the helmet allow air to flow through goggles, preventing fogging & keeping vision clear. Sizing System An interior size-adjustment system allows the wearer to find an ideal fit by simply twisting the dial at the rear. Construction The hybrid shell uses in-mould construction for maximum comfort while keeping weight to a minimum, & a robust ABS top shell for increased durability. The e PS liner provides shock absorption in the event of an impact.