【Material and Features】Protective film made of polyurethane (PU) material. It is soft and only 0.1mm thick, adheres to the skin, prevents water from seeping in, and completely waterproofs wounds. 【Usage Scenarios】Since it can waterproof the skin, it is useful when taking a bath, swimming, or when you don't want to get wet. It is suitable not only for protecting wounds from injuries but also for waterproof protection of scars after cesarean sections and tattoos. 【Easy to Use】Place gauze or other necessary materials over the wound, peel off the backing paper from the back of this product, apply it to the wound, and then peel off the surface release paper to complete. It is a disposable design, so you can always keep it clean. 【Large Size, Customizable】The size of this product is 15x15cm. It is wide and can be applied to large wounds. You can cut it with scissors to any size you want. Guide lines are printed on the backing paper, allowing you to cut along those lines with scissors.