Adhesive Design: The interior of the cups features a skin-friendly, medical-grade silicone adhesive that sticks directly to the skin for a secure fit without the need for straps or a back band. Drawstring Closure: The front drawstring allows you to adjust the level of cleavage. Tightening the laces pulls the breasts together for an enhanced push-up effect and a deep "V" shape. Reusable & Washable: Most of these bras are designed to be reusable; the adhesive can be cleaned with mild soap and water to maintain its stickiness. Shape & Material: They often feature a "butterfly" or wing-like shape to provide better support and are typically made from a mix of polyester and silicone. Amazon.in Amazon.in +6 How to Use Clean Skin: Ensure your chest is clean and free of oils, perfumes, or lotions, which can prevent the adhesive from sticking. Apply Cups: Loosen the drawstring and apply one cup at a time, positioning it at the desired angle. Tighten: Once both cups are in place, pull the drawstring to achieve your preferred level of lift and cleavage.