High-performance comfort and top safety features in a hybrid shell design make the Prime MIPS an incredibly light yet durable helmet. FEATURES: Weight: 532g 50/50 hybrid shell construction combines Endura-shell and in-mold shell constructions for wear-and-tear resistant durability and featherweight performance Active ventilation with 23 total vents let you easily fine-tune your temperature with open settings for maximum airflow, closed settings for locking in heat, and everything in between; Goggle ventilation channel helps maintain airflow to goggles to help reduce fogging MIPS Multidirectional Impact Protection System is a revolutionary technology that mimics the brain's own protection system with a low friction layer that lets the helmet slide relative to the head In-Shell 360° BOA Fit System integrates a fit dial directly into the helmet and provides for micro adjustments in a complete halo around the wearer's head Fidlock snap helmet buckle uses magnets to allow you to open and close the buckle with one hand even when wearing gloves Expedition fleece on liner and ear pads is low pile, pill resistant, and moisture-wicking for maximum warmth during high heat riding Compatible with audio accessories