The Smith Descend Helmet packs the latest impact protection into a lightweight, low-profile design that lets you focus on riding more and fussing with your gear less. It combines Mips® and zonal Koroyd® for enhanced energy absorption in the event of a crash. From cold and stormy to warm and sunny, adjustable vents let you dial in the climate control to match the day. Audio-compatible ear pads help keep you connected, and our adjustable dial fit lets you fine-tune the fit and feel on the fly with one hand. Features: Protection Lightweight in-mold construction fuses the exterior shell and EPS foam for a one-piece design that's lightweight and durable Zonal KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head Fit Designed for ultimate integration with Smith goggles for maximum comfort and venting AirEvac™ ventilation sytem integrates with Smith goggles for fog-free lenses 360 degree micro-adjustable dial fit system for easy, on-the-go-size adjustment Available in Round Contour Fit to better match rounder head shapes Integration Regulator climate control allows easy, one-handed vent adjustment. 16 Vents Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible Aleck® audio systems compatible