From GF website: No longer do you need to choose between a sports bra and a crop top. Made from recycled water bottles, Topanga has a high-neck, a low back, and adjustable criss-cross straps that keep everything in place. Finally an x that won’t let you down. Made from 79% recycled plastic bottles (RPET) and 21% spandex Recyclable with ReGirlfriend Designed for low-impact workouts High neck Adjustable criss-cross straps Full coverage Soft yet sturdy construction with four-way stretch