The Name Gems Refers To A Precious Stone. The Alpina Gems Is Our Freeride Jewel: Unique, Lightweight And Valuable - A Gem For The Head. A Particularly Striking Feature Of The Gems Is The Scattered Hole Pattern Structure That Allows For Ventilation Across The Entire Surface. This Feature Will Come In Handy For Every Freerider During A Sweaty Climb Or In Sunny Mountain Weather. Naturally The Active Venting Can Also Be Operated With Gloves On. For Extra Protection In The Backcountry, The Helmet Has A Low Cover Around The Back Of The Head And A Hybrid Shell Structure, Which Also Distributes The Forces Exerted By Objects Striking The Helmet. Features:- 3-Layer Facial Foam: Shaped, Multi-Layer Face CushioningSpecifications:- Width Of Glasses: 175- Glasses Wearers: Nein- Filter Category: S2,S2-3Technologies:- 3d Fit: The Height Setting Of The Run System Can Be Adjusted Individually- Airstream Control: Air Current Is Regulated By Adjustable Air Vents- Edge Protect: The Lower Edge Of The Helmet Is Protected By The Polycarbonate Shell Edge Protect- Ergomatic: Easy-To-Operate Belt Buckle With Twist-Proof, Multi-Stage Automatic Lock- Hi-Eps: Optimum Impact Absorption Thanks To Hi-Eps Material Made From Microscopic Little Air Chambers- Hybrid Tec: Combination Of Inmold Production And Hardshell Guarantees Maximum Safety With Minimal Weight- Run System Ergo Snow: Precise Size Adjustment Thanks To Flexible Adjustment System With A Large, Non-Slip Setting Dial Made From A Two-Component Mix And Two Large Cushions On The Back Of The Head That Distribute Pressure- Y-Clip: Adjustable Straps By Ears