Features: Breathable & Waterproof: Waterproof and breathable, allowing your skin to breathe freely, while providing the best for protection for the sensor. Strong Adhesion: The sticking is firm, so you don’for 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. Specifications: Item Type: Sport Sensor Sticker Material: Elastic Fabric Color: Complexion/Black(optional) Size: Approx. 7.4x7 for cm/2.91x2.75 inch Weight: about 80g Quantity: 50 Pieces/pack Package Includes: 50 Pieces Sensor Adhesive Patches note: The sensor is not included in the package. Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.