Revo RG 7007 Echo Polarized Ski Goggles plastic Imported Adjustable stylish strap constructed with anti-slip silicone breads to stay put Unrivaled peripheral vision for an optimal field of vision on the slopes Air vent technology for optimal air flow inside and out, our air-vent technology reduces fogging Triple layer foam protection for a secure, comfortable fit that doesn't sacrifice function or flexibility Dual lens; two layers of lenses help prevent fogging