Adjustable replacement strap for Polar A300. Soft, breathable silicone material, ideal for sports and fitness. Lightweight and compact, seamless waterproof design, suitable for swimming or diving. The size of the bracelet can be adjusted according to the circumstances of the wrist to meet different people. Various colours to choose from. Choose the colour you want for your watch Adjustable Bracelet for Polar A300 Smart Heart Rate Monitor Replacement Wristband Sport Wristband Features: Adjustable replacement strap for Polar A300. Lightweight and compact, seamless waterproof design, suitable for swimming or diving. The size of the bracelet can be adjusted to fit different people. Soft, breathable silicone material, ideal for sports and fitness. Different colours to choose from, you can choose the colour you want to decorate your watch with. Specification: Material: Silicone Net weight: 30g Gross weight: 31g Strap length: 96 mm + 142 mm / 5.59 inches. Band Width: 22mm/0.86inch Package includes: 1 x bracelet (without smartwatch). Note: Please allow 1-2 cm error due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.