80% Nylon, 20% Spandex Pull open the seal And Comfortable to Wear: Made of Medical Grade Silicone - Low and skin friendly, soft and comfortable to wear, suitable for sensitive skin. Strong sticky silicone holds it in place to create breast curves, keeping breasts supported and alive. [great for you] Natural look and invisibility: Thin edges and thick center better protect and hide nipples. These nude seamless nipple-free shields make them look natural and invisible even under sheer clothing. The perfect solution for tops, shirts, strapless, backless, deep V, wedding dresses, swimwear and dresses. [Instant Breast Enhancement] Washable & Reusable: Weight Per Pair: 1.7 oz. Lightweight and disposable, you can take it with you even when traveling. After each use, rinse with warm water below 86F, wash with mild soap, and air dry. After drying, the plastic sheet can be reapplied and placed in the bag for next use. Made of high-quality silicone allows the nipple-free shield to be worn multiple times without losing its stickiness. [use them over and over] TIPS: Before use, wipe your breasts with a warm towel; dry in a cool place, do not expose to sunlight. Exposure may reduce silicone tack; sweat and high temperatures may affect silicone tack.