Made of natural cotton, comfortable and soft to wear, not easy to break, can last a long using life.

There is a rubber holder on both sides of the cords, they are adjustable, you can adjust its size according to your own needs.

Cotton

Eyeglass Sunglass Strap

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MAMCN7T7NQLG1557E0L514C

TENDYCOCO 3 Pieces Eyeglass Sunglass Strap Non-slip Eyeglass Chain Eyewear Retainers Cord Holder Lanyard Strap