Welcome to the store! WATERPROOF, BREATHABLE & LONG-LASTING: This transparent sensor patch is waterproof and breathable, allowing your skin to breathe freely while protecting it. Moreover, it adheres reliably, ensuring a very long lifespan, lasting over 14 days and 14 showers. No hole and no adhesive in the middle: large size (diameter 9 cm) Freestyle adhesive patch, but without a hole and adhesive in the middle for full protection and easier replacement if needed (does not stick to the sensor). Easy to Install and Read: Pre-cut paper on the back, easy to use by yourself, no additional help required. You can also easily read through the patch. Hypoallergenic Adhesive: latex-free medical material, breathable and comfortable, leaves no residue on the skin. Material: transparent color Material: TPU, black khaki Material: elastic fabric + acrylic adhesive, Product size: 11 * 7.8 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!