Atomic Four AMID Pro helmets are the pinnacle product in the Atomic all-mountain Four family. What makes this Pro CTD model extra special is Shocksense, smart-helmet technology which monitors your helmets impact-damage and has an in-built SOS function. The combination of AMID technology and Holo Core offers up to 40% more impact protection than industry safety standards. Live Fit pads mold instantly to your head shape. The helmets position on your head and how snug it fits can be fine-tuned with the 360 Fit System. And besides an urban-inspired, low-profile design, Four AMID helmets also offer a removable liner and goggle clip, which let you ride with beanie and goggles underneath the shell if you want. Wear it your way!• AMID• Live Fit• Hybrid In-Mold Construction• Impact Assessment• SOS Alert Function | Atomic Four AMID Pro CTD Ski Helmet | Light Grey, 59-63 | The House