Material: polyester and cotton, breathable and comfy to wear.Cut-out open back with twist detail, knotted shirt, unfinished edeges creating the cute and edgy. Shows the skin properly. Workout tops for women, perfect backless top for exercise, yoga, running, gym, any type of workout or everyday wear.Backless and short sleeve, round neck, solid color. Plain tee in front but a dream at the back. So impressive casual t shirt. Open back, sexy, short sleeve, sports, twist back design perfect show your sexy charming back and sports bra.Lightweight stretch top with open back, relaxed fit, soft material, easy to care. Great for vacation, casual wear or exercise like yoga, jogging, running, workout at gym, etc.Note: our actual size differs from Amazon size chart, please refer to the size chart in detailed description.