Keepons Superior Black Prevent Eyeglass Slipping Anti Slip Anti Slide Eyewear Sunglasses Spectacle Glasses Temple Tip Sports Ear Hook Sleeve Retainer

PRODUCT NOTES - These are NOT one size fits all. Size concepts like small, medium, large aren't helpful in describing Keepons because for this product to work it must be threaded past your eyeglass temple tip (usually very wide) and unstretch itself to sit tightly around your temple bend area (usually very narrow). And since eyeglass manufacturers don't standardize temple tip widths and temple bend widths, no single style of Keepons will fit all styles of eyeglasses. Therefore to know which Keepons you need, you need to first know your own eyeglass temple tip width and temple bend width and then see which Keepons are compatible with your measurements. Our Keepons Fitting Guide takes you through the measurement process and is located here (www.amazon.com/sp?_encoding=UTF8&asin=&isAmazonFulfilled=1&isCBA=&marketplaceID=ATVPDKIKX0DER&orderID=&seller=A2UB1M927IZI07&tab=&vasStoreID=). Click on the HELP tab in the middle of the page of the URL in between the brackets above. Color: Black, Quantity: 1 pair, Material: Allergy-free odor-prevention silicone, Stretchy: YES, Unstretched Hole Diameter: 4mm (0.1575"), Maximum Stretched Hole Diameter: 8mm (0.3150"). Manufacturer replacement policy in effect (see manufacturer reply comments to product reviews for details). Manufacturer lowest price guarantee in effect. Finally, if you're thinking of leaving us a negative review, please contact us directly (www.amazon.com/gp/help/customer/display.html?nodeId=537800) so we can do everything possible to make things better.