Breathable & Waterproof: Waterproof and breathable, allowing your skin to breathe freely, while providing the best protection for the sensor. Strong Adhesion: The sticking is firm, so you don't need to worry about falling off when you wear it in the shower. Easy to Stick: Just tear off the backing paper, you can stick it anywhere on your body. Premium Quality: Made of high-quality elastic fabric material, close-fitting and comfortable, can be easily torn off. Widely Application: You can use it with your sensor, and you can wear the sensor for running, showering, swimming, mountaineering and other activities. Item Type: Sport Sensor Sticker Colour:black/skin color Material:Stretch cloth + acrylic Size:7.5 x 7.5cm Package Contents: 50 x Sensor Adhesive Patches Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.