Long Lasting: -Our patches hold your sensor device firmly to the skin, extending its lifespan. With proper care, the sensor tape can last up to 14 days without causing it to fall off or loosen. Works well even when swimming, showering or exercising regularly. Waterproof and Sweatproof: -Our patches is made of high quality natural cotton material, which is waterproof and breathable. The cotton material dries quickly and prevents sweat from loosening your sensor, so you don't have to worry about showering, raining, swimming, etc Comfortable and Hypoallergenic: -The freestyle adhesive patch is hypoallergenic and latex-free, leaving no residue on the skin even after 14 days. There is no irritation, itching or discomfort when using it. No glue in the center: -Our soft overpatch is designed with no adhesive in the center, will not stick to the sensor, can stay for a long time. Adhesive tape patches with pre-cut transparent tape and protect cgm glucose monitor, will not cause damage to the sensor when you need to replace the patch. Flexible and Easy to Use: -Waterproof patch just peel off the backing paper to easily cover the sensor. Package contains 20 patches, 3" diameter, 1 1/5" adhesive free area.