knit hats made of recycle yarn Repreve.Material comfortable and breathable.Comfortable handle and good elasticity.Environmentally sustainable. REPREVE® is the world's leading recycled fiber, transforms recycled bottles into an amazing fiber, protects our land, air, oceans and even natural resources for future generations. Many leading brands are using REPREVE® fiber as trusted recycled content, to make high-quality products from surfwear to outdoor gear to car interiors, we're changing the world