Regarding Sizing: This item is available in only one size. Please refer to the size chart before purchasing and make your selection accordingly. Stay cool and protected during outdoor activities with the 4PC Summer Cooling Shawl UV Protection Arm Sleeves for Women. Made of recycled polyester blends, these arm sleeves are super soft, breathable, and comfortable. UV Protection: Designed to protect your skin from the sun's harmful rays. Cooling Effect: Helps to keep you cool during hot weather. Elastic Fabric: Features good elasticity for a snug fit on your arms. The arm sleeves come with finger holes for added convenience and thumb holes to provide extra coverage. Whether you're golfing, cycling, running, or climbing, these arm sleeves are a practical accessory for any outdoor enthusiast. Notes: 1. Due to manual measurement, there may be an error of 1-3 cm in size. Buyers who mind this error should place orders carefully. 2. Due to different monitors and light, the picture may not reflect the actual color of the product. Please refer to the actual product. Thank you. 3. All scenes and effects shown in the picture are for buyer reference only. Please refer to the size chart for product parameters. Thank you for your understanding.