1. The anti-slip silicone strap is more suitable for Acetate Glasses Legs, NOT for Thin Metal Glasses Legs,
2. It is applicable to the eyeglasses legs tail width up to 6mm.
– Color: mainly black.
– Material: durable soft elastic silicone.
– Total length: 22cm. (Elastic design allows you to stretch the strap up to 60cm).
– Hole size for glasses legs: 0.9cm*0.2cm.
– Elastic silicone strap design, make it suitable for both adult and children to wear.
– Installing the anti-slip strap on your glasses legs and wearing it on your head, can effectively prevent your glasses from falling when you are doing sports.
1 * Durable Eyeglasses Sunglasses Glasses Anti-slip Elastic Silicone Headband Strap (Black)