Dye i3 Airsoft Goggles (Click-a-Color) Tiger Teeth buckles allow you to adjust your Invision woven rubber strap for a custom fit. Tiger teeth are designed to bite down and secure the strap during rigorous competition. The i3 offers outstanding peripheral vision, providing more than most other goggle systems on the market today. This added vision makes movement easier to recognize, providing a distinct tactical advantage for users. The i3 includes our optically correct toroidal impact lens to protect your eyes. In addition the i3 goggle comes standard with HARDCOAT, a scratch resistant coating that protects both sides of the lens against scratches and minor abrasions. The included UV coating also provides exceptional protection from the sun's harmful rays. The i3 Pro features an industry first compound radius lens with thermal technology, giving the player the ultimate vertical/ horizontal peripheral vision. Dye thermal lenses provide the benchmark for anti-fog performance. All Invision lenses provide perfect optical clarity and set the standard for visual performance.