Bern Unlimited Baker Hard Hat Matte Finish Snow Hard Hat with 8 Tracks Audio Liner HARD HAT MULTI-IMPACT design and DOES NOT meet the Single Impact rating for CPSC, ASTM or EN 1078 ratings, THIS IS NOT A HELMET Soft and comfortable BROCK foam is the only fully open cell construction that permits full breathability around your head Unique Construction very comfortable for a wide range of conditions Simply un-snap knit to remove for warmer weather conditions or sports