Breathable Fabrics: Front 94% Polyester, 6% Spandex; Back: 60% Nylon, 40% Spandex. Breathable & stretchy fabrics for ultimate comfort, it feels soft, thin, skin-friendly and lightweight with just the right amount of stretch, and you can wear this at work and be comfortable all day. The fabric is not easy to fade, no pilling. Elastic Band At The Bottom: Our binder has an elastic band around the bottom that’s not tight and ensures the binder stays securely in place without riding up. The band at the bottom keeps it perfectly in place and is super comfortable, bringing a you secure wearing experience. Double Layers Binder: The front and back of the binder are made of slightly different materials. The main materials on the front are polyester and spandex, the outer layer of stretchy compression fabric for flat appearance, the inner layer of micro-elastic lining to hide the breasts and give you a comfortable compression feel. Occasion: Transgender, FTM, Women, as a Stage Cosplay Show Costume or someone dislike large breasts. Relieve your gender anxiety. See less