Specifications: Material: Soft Silicone Strap width: 20mm Function: Replacement Strap Compatible with: For Huami Amazfit bip watch Color: As the picture show(optional) Descriptions: It is skin-friendly and provides comfortable feeling when you wear it during sleep Made of quality TPE material, environmental and healthy. It can be adjusted to different length, you never worry about it too long or too small. Contracted design style, with you life contracted and not simple. Fashion, stylish and durable, this wristband is ideal replacement for For Huami Amazfit bip watch. The size can be adjusted according to the circumstance of individual wrist.