High-Quality TR90 Frame; TR90 is made with a Swiss technology to be super flexible, durable and lightweight. Multi-Layer TAC Polarized Lenses Eliminates 100% of UVA/UVB Harmful Blue Light and Glare Lightweight Cupronickel Arms with TR90 tips Standard Stainless Steel Hinges Adjustable Nosepads for a Comfortable Secure Fit Scratch and Impact Resistant