Ryders Eyewear calls this model The Face because they're so comfortable you'll think they're part of your face. The TR90 frames certainly lend truth to that notion with extreme flexibility for stellar comfort, not to mention hydrophilic nose pads and temple tips that keep everything in place, even when wet. The lenses feature photochromic technology that adjusts the tint of the lenses to suit ever-changing light levels. They're shatterproof and scratch-resistant, too. More importantly, they're optically correct, which means you get a clear, true view in any direction. Throw in UV protection for even more protection.