NuBra Adhesive Bra Size PA. A backless, strapless, seamless, self-adhesive bra from NuBra. The unique push-up design provides maximum support and cleavage without binding bra straps. Each bra is reusable, and adheres to the skin with silicone adhesive. Apply each side, then connect with the clasp in the middle. Hand wash with mild soap and water.