Made up with safe and non-toxic silicon material. This invisible push up bra is lightweight, breathable and extremely supportive. This Backless And Strapless Bra has butterfly-shaped edges, sticks nicely, and helps to gather the extra fat of armpit to the breast for a sleeker look. Please kindly note that too much sweat will affect stickiness, so the Silicone Adhesive Bra is not suitable for using in high temperature outdoors or doing exercise. Prior to putting it on, I would suggest applying some baby powder to your chest. The traction And dryness helps the bra to stick easier. This Push Up Bra features skin-friendly adhesive in cups to always stay in place, providing a securely fit all-day long - also can be reused multi times. Perfect for strapless/ low-cut outfits, backless dresses, wedding dress, and evening/party dress. Cup A : fits for 32A 34A 36A 32B. Cup B : fits for 38A 34B 36B 32C. Cup C : fits for 38B 34C 36C 32D. Cup D : fits for 38C 34D 36D 38D. Adhesive bras have a strong adhesive, that will allow for a secure hold, yet still be gentle on the skin. Our backless bras are washable and reusable. Just wash by hand with warm water and mild soap making sure all dirt and debris is removed, and air dry. I usually get a solid 8 - 10 wears with each one. This listing is for the nude color. I also have a lace up black option in my closet. *Currently on a trade break so this is for sale only*