Freestyle Sensor Easy to Use : Including 100 Pack Sensor Covers, value for money. This sensor cover can protect the sensor from falling off, and it is simple and convenient to use. Waterproof and Breathabl: This transparent adhesive patch is waterproof and breathable, which protects the skin and allows the skin to breathe freely at the same time. You can swim and shower freely, and don't worry about rainy days.Suitable for blood sugar monitor patch. No Holes and No Glue in the Center: The large-size patch is designed without holes and glue in the center. When you need to replace the patch, it won't tear off your sensor to provide comprehensive protection. Safety & Long Stay: Latex-free medical material, breathable and comfortable, will not leave any residue on the skin, it can long lasting 14 days. Attention: Our items adopts double-layer packaging. Please open all packaging so that you can find all the items. If the packaging is damaged during transportation, resulting in missing items, please contact our customer service to resend the missing items. These items are only sensor covers. items are only used to protect sensor. Our items do not include the devices required to check blood glucose. Covers for Libre 3 Waterproof Adhesive Patches