Chums The Slim Eyewear Retainer100% Authentic Brand New with Tags Chums Eyewear Retainer The Slim material silicone This lightweight, minimal retainer comes with a sliding, removable bead to adjust tension and fit. The grippy silicone ends latch on to most size temple ends and is UV and corrosion resistant so you know it won't fail throughout all of your adventures. Fits all frame sizes thin reader frames up to chunky sunglasses! Length : 19. 5