It"s Waterproof - It"s proven to be waterproof, so you don"t need to worry about showering, raining, swimming, etc. (without sensor)14 DAYS LONG-WEAR PROTECTION - Its reliable stick guarantees long lasting 14 days. The adhesive is hypoallergenic and latex-free, leaving no residue on the skin even after 14 days.Non-stick center: it won"t stick to your sensor, but protect it around in case you need to replace the patch, it won"t cause damage to the sensor.NATURAL COTTON MATERIAL: This large size (3.15" diameter) free sensor patch is made of natural cotton material which is breathable, stretchy and flexible.EASY TO USE AND EASY TO READ: 3-part pre-cut paper, easy to use by yourself, without the help of others. Also, you can easily read from tape as usual.Our products are made with the highest quality materials and are designed to provide you with the best possible user experience. We strive to ship out all orders within three days of purchase, and the estimated delivery time is 8-15 days.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it