Pack of 6 Sport Safety Anti-slide Thickness Sunglasses Universal Fit Rope Eyewear Retainer Strap Eyeglasses Cord Lanyard Holder Glasses Accessories Random Colors Made of Silicone ,Skidproof Size: 22*6*1.2 cm It can stretch to 60cm/24inch,fit for almost people Perfect to keep your sunglasses in place everywhere you go Fit most styles of eyewear with rubber connectors