Product size about : 19*5.5cm/7.4*2.1'' 29*2.5cm/11.4*0.9'' Product color: As shown in the figure Product material:Silicone + polyester product features: Dual elastic bands provide targeted compression to stabilize the patella and prevent slippage during running, fitness, and other activities. A built-in 5mm thick silicone pad provides excellent shock absorption, reducing joint pressure and discomfort. The lightweight knit fabric is breathable and wicks away moisture, keeping legs dry and cool, preventing overheating. The adjustable closure allows for a custom fit and secure movement. The curved design conforms to the knee, providing comfortable, all-day support and allowing for easy movement. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 pc Sports patella strap