Making a name for itself as the lightest and only bike-certified ski helmet in the women's collection, the K2 Meridian Helmet gives us four-season functionality in style. The tough polycarbonate shell is lined with highly-protective EPS foam to protect our noggin when working on new tricks in the terrain park, and the convertible full-wrap liner is extra soft, breathable, and wicks moisture for a super comfortable fit all day. The 360 K2dialed Fit System ensures just the right fit, the Magna-Snap goggle clip keeps our goggles securely in place, and the Passive channel ventilation system cools us down when things heat up on the bike, board, or skis.