Core Crop 2.0 Our updated best seller, the WYN active core crop, where function meets fashion. Somewhere between sports bra and form-fitting tank top, the Core Crop is the best of both worlds. The Core Crop 2.0 allows freedom of movement for your run or flow. The pocket in back allows you to carry your phone without even knowing it’s there. Run-tested to perfection by our professional athlete founder, this is the piece you didn’t even know you can’t live without. Light support is perfect on its own for A/B cup runners, but those with more ample chests may want to layer with your favorite sports bra underneath. quick-dry, breathable fabric with light mesh liner four-way stretch pocket fits most phones comfortably reflective logo detailing on back to help you be seen on the road. 80% Nylon, 20% Spandex this garment is made with OKEO-TEX Standard 100 certified fabrics