Description: Refrigeration is required upon arrival! Colors: White, Blue, Purple, Pink, Green Features: 1. Adjustable Size for All-Day Comfort: This cooling neck warmer features an adjustable buckle design for a comfortable fit around various neck sizes, ensuring a secure fit whether you're relaxing at home or engaging in high-intensity activities like cycling or hiking. 2. Lightweight and Portable: This compact cooler is designed for maximum portability, providing instant relief from heat without adding bulk—perfect for commuting, beach vacations, or weekend getaways. 3. Versatile Cooling for All Activities: Designed to conform to the natural contours of the neck, this product provides continuous, lasting coolness during workouts, outdoor work, travel, or leisurely summer walks, making it ideal for both sports and everyday use. 4. Easy to Clean and Maintain: This neck cooler features a smooth, low-maintenance that wipes clean easily, ensuring a fresh and hygienic experience after sweaty workouts, dusty trails, or long workdays—ready to meet your needs. 5. Long-Lasting Cooling Technology: Infused with advanced phase change materials, it quickly absorbs excess heat and releases a refreshing coolness that lasts for hours, helping you stay comfortable during exercise, travel, or outdoor activities. Reviews: 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 Ring