Check the listing for details. Freestyle Sensor Covers-40 PACK Transparent Sensor Covers Libre 2,3 WATERPROOF. Color: Clear, Condition: New. Listed at 12.36 USD. Product Description: 【Protect the sensor】-Safeguard your Libre 1/2/3 sensor with these covers, ensuring it stays securely in place. The strong adhesive provides reliable protection against accidental detachment. 【Waterproof】-Crafted from latex-free, specially designed material, the Freestyle sensor cover is waterproof and sweat-proof. Feel confident engaging in water activities, as it ensures a durable 14-day lifespan. 【Feel like second skin】-Unlike conventional overpatches, these transparent adhesive patches are incredibly thin, offering a second-skin feel. You'll hardly notice it's there, providing a comfortable and discreet sensor cover. 【Easy to use】-With three layers, this clear bandage is easy to use. Simply peel off the backing paper and protective layer, and it's ready for application. 【100% CUSTOMERS SATISFACTION GUARANTEE】-We stand behind our product with a 100% satisfaction guarantee. If you're not fully content with your purchase, we'll refund your money.