Feature:1. Easy To Clean: Easy to remove and easy to tear off the backing sticker makes sticking a breeze.2. Waterproof Design: This sensor patch is waterproof and breathable, it allows your skin freely breath while protects.3. Easy To Use: Sensor patches can be used for running, walking, swimming, bathing, and doing your daily activities.4. Comfortable, Thin And Flexible: Sensor patches can support the body's natural range of motion, these patches are and latex free, safe and non irritating.5. Patch Has No Holes And Glue: Middle is designed with a pre cut to keep the sensor and make the patch more secure.Specification:Item Type: Sensor CoversSize: Approx. 10 x 8.5cm/3.94 x 3.35inMaterial: TPU Package List:10 x Sensor CoversNote:Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.