BREATHABLE FABRICS: Front: 94% Polyester, 6% Spandex; Back: 60% Nylon, 40% Spandex. The binders adopts imported organic medical grade fabrics. It has a good performance in air permeability and moisture absorption, keeping your back dry at any time, giving you a comfortable wearing experience. It feels natural and comfortable, very breathable and light. EXCELLENT DESIGN: Our transgender binders feature an elastic band design at the bottom, the band at the bottom is a more snug fit but not too tight, it helps keep everything in place. An elastic band is less likely to shift or ride up or roll up during activity, and also adds to the overall feeling of support and security in a chest binder. And the band is soft elastic and comfortable, easy to put on and take off. THREE-LAYER BINDER: The full coverage Polyester Spandex chest binders are soft and stretchy with three layers front construction that comfortably hugs and supports you. No padding and the back of the ftm binder is a single layer. Besides, our binders provide natural shaping and support without the discomfort of an underwire. USER: Make the chest look flat and become cool. Wearers usually include mastectomy, transgender, FTM, cosplay, unisex or stage performers. Swim friendly, it doesn’t have any wiring or corset-type structure, pay attention to that you're supposed to size up for swimming. Anyone who wants to look flat, feel comfortable, able to move and breathe, this is for you! Hand Wash, Note: Please use the size chart provided to determine your size. If you are in between two sizes, choose the bigger one. Our breast binders use high-quality fabrics and innovative design to ensure compression without discomfort. Our updated pattern features a streamlined fit and improved sizing for all body types. Binder Information: Double panel chest ties Our breast binders use a double binder made from a nylon-spandex blend and cotton for added flattening effect, flattening your breast in a healthy and safe way. Perfect for tank tops or t-shirts. Swimming friendly. Our chest binder has no wiring or corset structure and the fabric is breathable and comfortable, lightweight. Make sure you are one size larger for swimming, looser than normal, breathe well and do not wear it for too long. Comfortable shoulder strap. The straps are wide enough, the transtie does not show up at the neckline - the neck is deep enough that it does not peek out under T-shirts, even V-neck. The shoulder straps are elastic and do not deform, do not dig into your skin. Safety note: In this sense, wearing a breast binder that is too tight for you and causes pain could harm you. Please make sure your chest binder fits correctly! You should be able to breathe easily in a correctly fitting folder.