The Flying Fisherman Lagoon Floating Polarized Sunglasses feature a timeless design for classic styling on and off the water. The eco-friendly frame is made with TPX material that is less dense than any other plastic polymer and lighter than water, allowing it to float so you will never lose your sunglasses again! TPX is also highly durable, flexible, and heat resistant. Flying Fisherman's AcuTint polarized lenses improve visual comfort, enhance contrast and clarity, eliminate annoying glare, and block 100% of harmful UVA and UVB rays. The Triacetate lenses are also impact and scratch resistant and have an anti-saltwater coating. This combination makes the Floaters incredibly comfortable for all-day wear. Features: Medium fit. Polarized Triacetate Lenses. AcuTint Lens Coloring System. Lightweight and optically correct. Shatterproof and scratch resistant. 100% UVA and UVB protection.