The strap is made of high quality silicone material, waterproof, sweat resistant, soft and comfortable. Applicable model: Compatible with Micheal Kors models MK8152, MK8153, MK8169, MK8170, MK8184, MK8216, MK8295, MK8296, MK8303, MK8325, MK8356, MK8357, MK8380, MK8382, MK8383, MK8406, MK8427, MK8445, MK8453, MK8466, MK8492, MK8493, MK8511, MK8556, MK8557, MK8558, MK8577, MK9016, MK9019, MK9020, MK9026 strap. Bandwidth: 13mmX29mm See the detailed picture for the specific size. What you get: a wristband, three 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.