Material Rubber Size 40 Unit (Pack of 1) Item dimensions L x W x H 9 x 1.9 x 9 centimeters Style Adhesive Sterility Rating Sterile Item Shape Patch, Tape About This Item Waterproof and Breathable and long lasting: this transparent patch is waterproof and breathable, it allows your skin to breathe freely while protecting it. And also its reliable adhesive guarantees a very long use, stays in place for more than 14 days and 14 showers. No hole and no glue in the center: large format (diameter 7cm). These adhesive patches but no hole and no glue in the center for full protection and easier changing in the case. (Does not stick to the sensor) Easy to use and read: Pre-cut paper, easy to use by yourself, no need for other helpers. Besides, you can easily read the tape as usual. Hypoallergenic adhesive: Medical latex-free material, breathable and comfortable, leaves no residue on the skin. Pack of 40 pieces