Spectacle Glasses Anti Slip Strap Stretchy Neck Cord Outdoor Sports Eyeglasses String Sunglasses Rope Band Holder Material : Made with premium materials that soaks sweat all day but still holds your spectacles tight.Features : It does not get dirty, stink or fray and keeps your eyewear secure. It's Flexible, Durable, Eco-friendlyUsage : Ideal for fishing, biking, hiking, rock climbing, snow skiing, snowmobiling or just enjoying the great outdoorsTotal Length : 56 cms Sport Eyewear Neck Strap