Model: Huami Amazfit band7 Weight: 19 g Fits wrist circumference: 5.5-8.7 inches Material: silicone Process: This product is made of silica gel, waterproof, sweat proof, comfortable and soft. The watch strap is thickened, comfortable to wear and convenient to use. The material has no harm to human skin and is not allergic. Specifications: Comfortable and Flexible: Durable and soft silicone wristband improves airflow and comfort for a comfortable wearing experience Easy to Install: It only takes a few seconds to install the strap for your watch Personalize Your Device: Personalize your smartwatch, from work to exercise. Suitable for any occasion Multi-color optional：A good substitute for bracelet coloring Light and Breathable：Comfortable to wear Package Included: 1*Watchband