SOFT AND ANTI-SLIP:Made of quality material, safe, skin-friendly, soft, breathable, elastic and durable.This soft elastic braided rope has great anti-slip effect, allowing it to be firmly attached to the glasses temple.Suitable for: Glasses with leg width within the range of 4 - 8 mm / 0.157 - 0.314 inch

EASY TO INSTALL:This glasses strap is Easy to install. Soft material, it will not scratch you glasses.It can be firmly connected to your glasses to prevent them form dropping while sports.

HIGHLY ELASTIC:Highly elastic, fits most people' head circumferences, perfectly adheres to the shape of the head and adjustable to change the length for proper fit.Size (L*W): Approx. 42 * 2 cm / 16.53 * 0.78 inch (Elastic - Maximum stretched length is 52 cm / 20.47 inch)

FUNCTION:This glasses strap is designed to keep a tight grip on your eyeglasses, preventing the loss of the glasses and breaking during movement or sports such as biking, hiking, skiing, allowing your eyewear to be comfortably hung on your chest, or rest on top of your head.

WIDELY USE:Suitable for most glasses with leg width within the range of 4 - 8 mm, easy to use.Suitable for sports like running, basketballs, etc.It is Great for water sports, boating, kayaking, surfing and so on.

RiToEasysports 5pcs Glasses Strap Sports Sunglasses Strap Glasses Elastic Neck Strap for Men And Women Universal Adjustable Retainer Cord Chain Holder Lanyard for Eyeglasses