Features: Craft from polyester fabric with sun protections blocks harmful sun while maintaining breathability for comfort during outdoor cycling, hiking, and fishing activities. Engineered with ice silk cooling technology, these arm sleeves feature moisture wicking properties to keep skin dry during intense basketball or runs. Suitable for outdoor enthusiasts, stretchable design that conforms to various arm shapes for extended wear in professional sports or daily commutes. Great for mountain trekking, lightweight sleeves prevents sunburn without hindering movement through reinforced stitching and ergonomic shaping. Combining sun blocking performances with temperature regulating fabric, these unisex sleeves deliver protections across season. Specifications: Component: Polyester Optional Color: As picture shown Optional Size: app. As picture shown(Chinese Size,follow the size chart) Size:M Length:38cm(14.96inch) Top circumference:23-27cm(9.06-10.63inch) Lower circumference:13-15cm(5.12-5.91inch) Size:L Length:39cm(15.35inch) Top circumference:25-29cm(9.84-11.42inch) Lower circumference:15-18cm(5.91-7.09inch) Size:XL Length:40cm(15.75inch) Top circumference:27-32cm(10.63-12.60inch) Lower circumference:18-20cm(7.09-7.87inch) Size:XXL Length:41cm(16.14inch) Top circumference:29-34cm(11.42-13.39inch) Lower circumference:20-22cm(7.87-8.66inch) Quantity: 1pair Package Includes: 1pair Arm Sleeves note: Please allow 1-3cm error due to manual measurement. please sure you not mind before you bid. Due to difference between different monitors, the picture may not reflect the actual color.