The Smith IO7 is an excellent goggle for any snowrider. This Medium size frame has Smith's Responsive Frame Design that easily adapts to most face shapes once you cinch up the strap to the proper size. The IO 7 has AirEvac Technology that keeps air moving through the frame, that works together with the 5X Anti-Fog Inner Lens to prevent your lenses from fogging. Smith's Quick Release System allows you to change lenses on the fly when the sun moves behind the clouds or it starts dumping snow on you. The TLT Spherical Lens Technology and Porex Filter prevent any optical distortion when you get to elevation. Three Layers of DriWix Face Foam pulls moisture off your face when you work up a sweat, while keeping a tight seal across your face to keep the elements out. Single Pivot Quick Release Lens Change System, Spherical Carbonic-X Lens, 5X Anti-Fog Inner Lens, TLT Lens Technology, Porex Filter, Responsive Fit Frame, QuickFit Strap Adjustment, 3 Layer DriWix Face Foam, AirEvac, Ultra-Wide Silicone Backed Strap, Dual Axis Outriggers, Race: No, Category: Adult, OTG: No, Special Feature: None, Helmet Compatible: Yes, Spare Lens Included: No, Goggle Ventilation: High, Goggle Lens Change: Easy, Frame Size: Medium/Large, Lens Shape: Spherical, Lens Type: Non-Mirrored, Model Year: 2018, Product ID: 911522, Model Number: IE7IRG17X, GTIN: 715757568085