Easy to Use: Including 100 Pack Sensor Covers for libre 3 without device, value for money. This sensor cover can protect the sensor from falling off, and it is simple and convenient to use Waterproof and Breathable: 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 Latex-free and Hypoallergenic: Latex-free medical materials can be used by people with sensitive skin. Breathable and comfortable