Features: brand new and high quality Comfortable and flexible: The durable and soft silicone wristband can improve airflow and comfort, bringing you a comfortable wearing experience. Easy to install: it only takes a few seconds to install the strap on your watch. Personalize your device: personalize your for smart watch from work to exercise. Suitable for any occasion The material has no harm to human skin and is not allergic. for Polar Grit X. Specifications: Material:Silica Gel Size:Approx.13.5x2.2x2.2x9.4cm/5.31x0.87x0.87x3.7inches Color:Army Green/Black/Blue/Lime/Light Green/Orange/Red/White/Yellow for Polar Grit X Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Silicone Strap