Cotton, Nylon, Polyester No more slouching & back pain enjoy all day comfort: we have designed a unisex shoulder posture corrector for women & men that will straighten your back up. You can wear this back slouching brace all day long and feel comfortable! Material: nylon + velvet + sponge, one size, suitable for height of 140 to 185cm, and the weight should preferably not exceed 80kg. Wear and adjust in 5 sec: put on the correcting posture brace like a backpack with no assistance. Moreover, we have listened to our customers and improve the straps by rounding them. This posture straps don't cut and dig in the armpits. Invinsible under clothes: our back posture brace is invisible under clothes and completely discreet for your comfort. You can wear this posture corrector brace while at work, home or out and no one will know you have it on. Perfect gift idea: make a gift to your loved ones who suffer from pain, the figure 8 brace for posture correction will make them happy & healthy.