Outside of the glasses strap is nylon material and inside is filled with foam. The floating eye wear strap not only can attach on common glasses, but also on diving goggles, keeping the goggles afloat to secure your eye wear. The glasses strap has 8 different charming colors, include red, yellow, pink and so on, providing various choices for your various matching needs. The strap fits for rafting, fishing, swimming, floating and any other underwater or outdoor activities.