Comfortable Safe Materials-Made of natural cotton fabric.Light weight,latex-free,hypoallergenic,breathable,stretchable,safe and comfortable for your skin.In addition,practically pain-free removal and no adhesive residue on your skin. Waterproof&Sweatproof-Fast drying,it is waterproof and sweatproof.Only simply apply our adhesive patches to your Freestyle Libre,you will have no worry on shower,running,fitness exercise,etc.This small things will make you stay active in all weather conditions and bring you a better life. 40 Piece of Strong Adhesive Patches-Comes with 40 pieces economy Pack.One piece of patch is long lasting use for more than 10 days and 10 times of shower.It is the best value for your money. Easy To Use-This Adhesive Patches is suitable for the sensor of Freestyle Libre 1/2/3/Pro.No glue in the center,it will not stick onto your device and lead to any damage on your sensor.Only easily tear off the pre-cut backing paper and apply to your device,then it will firmly stay on your skin and provide continuous protection for your sensor. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!