Practical function: Size:54 x 2 cm, Universal fits almost any diving mask straps for back of head or swim goggles that allows replacement straps.
Quality Material：Made of quality silicone material, soft, comfortable, flexible and durable. Split strap design for a secure fitting on the head.
Universal: The black colors diving mask straps for back, use for different dark colors snorkel mask. It is compatible with the all apply masks for snorkeling, diving, free diving, mermaid.

Note:
It is recommended to rinse with clear water the mask after use. Do not use bleach or chemical products.
And let it dry under shadow and never under the direct sun rays.