Walleva Polarized Sports Sunglasses With TR90 Frame - Multiple Options Available 100% Polarized (Reduces Glare and Enhances Contrast), 100% UV Protection (Exceeds ANSI Z80.3 and EN 1836:2005 Standards) Prescription Lenses Insert Frame Included (Prescription Lenses NOT Included) Frame Material: TR90 (Super Light And Strong), Lenses Material: TAC (Triacetate, For Perfect Polarized Lenses); Hat Clip Included (Clip The Glasses On Your Hat With Arms Removed) Water Resistant, Dust Resistant,Impact Resistant - Passed FDA Drop Ball Test