WATERPROOF, BREATHABLE LONG LASTING: This transparent sensor patch is waterproof and breathable, allowing your skin to breathe freely while protecting it. In addition, it adheres reliably and ensures a very long service life, it lasts over 14 days and 14 showers. No hole and no glue in the middle: large size (diameter 9 cm) Freestyle adhesive plaster, but without hole and glue in the middle for full protection and easier changing if necessary (does not stick to the sensor). Easy to install and read: pre-cut paper on the back, easy to use by yourself, no further help required. You can also easily read through the plaster. Hypoallergenic adhesive: latex-free medical material, breathable and comfortable, leaves no residue on the skin. Material: transparent color Material: TPU, black khaki Material: elastic cloth + acrylic glue, Product size: 11 * 7.8cm. When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please dont hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it