Ultra- Lightweight Nylon The Oslo’s TR 90 nylon frames are significantly lighter than industry-standard materials like acetate and polycarbonate without sacrificing strength or durability. Patented Fit and Retention System WON’T SLIP OFF YOUR FACE. And forget about those painful pressure points on your nose. Inspired by the soft but amazingly sticky feet of the Gecko, our patented GEKO™ fit and retention system features a proprietary elastomer for nose and temple pads that's hydrophilic, chemical resistant and supports multi-directional traction with comfort. No matter how sweaty you get and which way you move, bounce or shake, you’ll never have to worry about slippery frames sliding down your nose or falling off your face. Find Your Fit Each pair comes with three different nose pad sizes to customize fit for a wide range of nose bridge widths. Looking for Optical? SHOP MEN SHOP WOMEN