Premium Material: The cooling arm sleeves is made of a perfect blend of 92% nylon and 8% spandex, soft and skin-friendly, comfortable and breathable, not easy to pill, and ergonomically designed. They are highly elastic, moisture-wicking and quick-drying, effectively dissipate heat from the hands and cool down quickly, ideal for outdoor activities in summer. Package Includes: You will receive 3 pairs of cooling arm cover in different gradient colors, each pair is individually packaged. We have three different color suits for you to choose from, including blue series, purple series, green series, gray series. The series is very suitable for matching various clothing, and can bring you a refreshing feeling even in the hot summer. Machine Wash Fastening: as the pictures shown as the pictures shown Thumb Hole Design: The unisex sleeves are designed with thumb holes to ensure a wider coverage of your arms and protect your hands from UV rays. The non-marking non-slip elastic band can ensure that the sleeve will not slip off your arm, fits most people's arms and will not bring you discomfort. Comfortable and Breathable: The high elastic cooling arm guard can wick away sweat and dry quickly, which can bring you a cool and icy feeling, avoid the sticky feeling caused by sweating, and will not leave marks on your arms. (Small tips: In summer, you can put the ice sleeve in the refrigerator for a period of time to wear it for better effect.) Widely Used: The sun protection arm sleeves can protect your arms while exercising, can effectively protect against UV rays, prevent sunburn, scratches, abrasions, mosquito bites, etc., very suitable for outdoor sports, tattoo covering, walking, cycling, running, Playing basketball, golfing, fishing, climbing, hiking, gardening, etc.