This listing is for the silicone tubes only. Sunglasses themselves are not included. Model: Anti-slip for sunglasses/eyeglasses Size: Approximately 6cm x 3mm x 4mm Color: Gray *Other colors are also available. Quantity: One pair (2 pieces) I enjoy road biking and am a big fan of Oakley sunglasses. I've used Radar EV, Jawbreaker, and Sutro Lite in the past, but now I'm using Sutro, which has a full frame that's less prone to scratching the lenses and isn't too racy. However, the Sutro doesn't have Unobtainium (anti-slip) on the temples, so I was concerned about slippage during rides and runs. I've tried several commercially available silicone anti-slip products and tapes, but these silicone tubes are minimal and fit well, with minimal interference with the helmet. There's no need to worry about them coming off even when wet with sweat, and you can wash them as they are. The hole diameter is about 1.2-1.5mm, and only one side of the four sides of the tube has unevenness. When I installed them, I wiped the temples with a wet tissue and then slowly slid them on. However, please be careful with the amount of force when installing them to avoid deforming or damaging the frame. I have installed them on Sutro, but of course, they can also be used on sunglasses and eyeglasses other than Sutro. They are recommended for those who want to improve the fit without ruining the silhouette of sunglasses/eyeglasses with thin temples! #Sutro #AntiSlip #SiliconeTube #Oakley #SportsSunglasses