Enhanced with dura-matter construction, mod1 pro sl is designed to increase all-around durability while keeping the same lightweight, low-profile design as mod1. This classic skate-style inspired helmet is offered in multiple fits and caters to skiers with a removable chin guard. For additional safety, a twiceme® medical id nfc chip is located on the back side of the helmet. Store your vital medical info and emergency contacts within the helmet so first responders can instantly get the information they need when time matters most.