Meet the worlds best-looking eyewear retainer! Crafted for adventurers, sunnystring keeps your sunglasses secure and on hand. With a one-size-fits-all design and made from recycled plastic bottles, theres a lot to love about this sunglass string. Worry-free adventuring thanks to the secure tightening bead Designed to fit any sunglasses, ensuring a snug hold One size fits most Cleans and protects your lenses Eco-Friendly Materials Main Materials: rPET (recycled polyethylene terephthalate) recycled plastic bottles