Polarlens S23 Exchangeable Lens Cycling, Running and Sports Sunglasses
Flexible Sports polycarbonate frame *** black / silver shiny ***perfect fit *** *** Black nosepads *** glasses in optical quality made from plastic carbonate *** Exchange system glasses: Smoke, Orange-Contrast, Clear *** REFLECTIVE FLASH MIRROR *** UV400, 100% UV sun protection *** Filter: 3.1 0 *** nosepads provide additional grip *** Extremely light: Weight: 20 grams*** Delivery: sports glasses , removable lenses, sports belt pouch, functional microfiber cleaning pouch ***Changing Lens Tip:  Pull firmly from the outside edge of the lens down. The frame will bend just enough and won't break, and the lens will pop out. Putting another one in is the same way - you've got to be firm about it. Put the lens notch into the corner of the frame near the bridge, then push the other side up and in. It takes a few times to get used to it, but once you get it, you've got it. :-)