The Vision Helmet is Black Diamond's most durable foam helmet for climbing, and this Vision MIPS Helmet adds a Multi-directional Impact Protection System for an even greater level of safety.  MIPS is a low-friction, slip-plane layer that rotates independently around your head to drastically reduce impacts off angled crashes, like when you smack the side of your head on the wall after a long fall. The Vision also has an updated design to the innovative hybrid construction that climbers have been enjoying for seasons. The polycarbonate shell covers a larger portion of the crown, and there's a layer of EPS foam underneath for added crown protection. EPP foam covers the rest of the helmet for multi-impact protection.