The details Non-adjustable straps. Racerback. Wear the recycling. This is a heavyweight stretch knit made from 79% REPREVE® Polyester sourced from recycled plastic bottles, and 21% Spandex. This is made with synthetic materials and may shed microplastics. Wash in cold water and line dry, or wash in a Guppyfriend bag to reduce shedding. Hand wash + dry flat. More on fabric & care. Fabric Wear the recycling. This is a heavyweight stretch knit made from 79% REPREVE® Polyester sourced from recycled plastic bottles, and 21% Spandex. This is made with synthetic materials and may shed microplastics. Wash in cold water and line dry, or wash in a Guppyfriend bag to reduce shedding. REPREVE turns post-consumer plastic bottles that might otherwise have ended up in a landfill or the ocean into fiber. Compared to conventional polyester, REPREVE fibers use 45% less energy, emit 30% fewer greenhouse gasses, and use 20% less water. Sustainably made in Vietnam. Care Hand wash + dry flat.