The strap is made of high quality rubber material, waterproof, sweat proof, soft and comfortable. Applicable model: Compatible with cartier Santos 100 23mm watch strap. Bandwidth: See detailed picture for specific dimensions. What you get: a wristband, two tools. After receiving the strap, please do not rush to install, first compare with your original strap and dial, determine the appropriate, and then install. If you have any questions, please feel free to leave a message to customer service, customer service will reply to you within 24 hours. Cartier