BLUEFEEL Ice Neck Cooler Comfort Backpack Set Cools Neck to 5 Heat Durable TPU Neck Blue BLF25128set & Re-Cooling [High-Purity PCM, 18°C, Freezes,

[Neck cooler and re-cooling pack set that freezes naturally below 18°C] It is resistant to condensation because it freezes below 18°C, and the 99.3% high-purity PCM material keeps you cool for a long time. [5-level size adjustment for a perfect fit] The block design allows you to adjust the neck size from 29cm to 43cm, making it easy to fit the neck of anyone, regardless of age or gender. *Design registration pending Lightweight and comfortable to wear: Weighing approximately 85g, it puts less strain on the neck. The seamless design prevents snagging on clothing or hair and feels smooth against the skin. Made with non-toxic, highly durable premium TPU: RoHS (Restriction of Hazardous Substances) compliant. Made with non-toxic, highly durable premium TPU that has passed SGS pressure testing. [Re-cooling while stored in the re-cooling bag] By storing it in BLUEFEEL's original re-cooling bag (1 re-cooling bag + 2 ice packs), you can easily re-cool it outdoors.