Ewinever 2-Pack Adjustable Kids Neoprene Eyewear Retainer,Child Sunglass & Sunglasses Holder Strap Cord for Childrens Eyeglasses (Black) ANTI-SLIP:The kids Eyewear Retainer will prevent your glasses from falling when you playing games, runing ,riding or any other sports.Enjoy your life. ADJUSTABLE:The sunglasses holder made of elastic nylon which ensures that straps will not easily fall off and are comfortable for all head sizes and shapes. WIDELY USED:Ideal for fishing, biking, hiking, rock climbing, snow skiing or just enjoying the great outdoors. SIZE:Length:10.43 inch,width:0.8 inch, 2 count Eyewear Retainer included. MONEY BACK GUARANTEE:If you are not happy with our product , feel free to contact us , we will refund all your money.