Description Colors: White, Green, Pink, Blue, Purple Features 1. Utilizes advanced phase-change cooling technology to remove heat from the body, providing 1-2 hours of refreshing relief with each use—ideal for hot weather. Performance varies depending on ambient temperature. 2. Made with a soft, flexible TPU outer layer, gentle on the skin, and features a secure, sealed design to minimize the risk of leakage or spillage during wear. 3. Ergonomically contoured design comfortably wraps around the neck without causing pressure or discomfort, providing a barely noticeable feel even during extended outdoor or indoor use. 4. Easily reactivated with just 15-20 minutes of freezing—no disposable components required—making it a practical, long-term solution for staying cool all summer long. 5. Suitable for a variety of warm weather scenarios, including hiking, gardening, commuting, sports, or office work; its compact size makes it easy to store in a bag, backpack, or purse. Review: 1. Manual measurement tolerance is 2-5g. Please don't mind your replacement. 2. Due to differences between different monitors, the image may not reflect the actual color of the item. Thank you very much! 3. The SKU color is the color of the product packaging. Package includes: 1 * Cooling Neck Wrap