TOKAIZ Cooling Pad for Comfortable Natural Cool Back Cooling Heat Perfect for and Suitable for and Backpacks, 28°C Freezing, Pad, Relief, Commuting,

[Comfortable fit and stays in place] Specially designed to fit three different backpack sizes, it fits snugly to your body when in use. It stays in place and is comfortable to wear when commuting to work or school, outdoors, or playing sports. Gentle cooling with natural freezing at 28°C: Made with plant-derived PCM material, it naturally freezes below 28°C. It provides a gentle cooling sensation that is not too cold, so you don't have to worry about frostbite even when using it for a long time, making it safe for everyone from children to the elderly. Lightweight design reduces burden: PCM material is approximately 30% lighter than water. It doesn't feel heavy even when placed in a backpack or school bag, making it comfortable for children to use. [No refrigeration required, can be reused] Unlike ice or ice packs, it freezes naturally at temperatures below 28°C, so no refrigeration equipment such as a freezer is required. After use, it will naturally freeze at temperatures below 28°C, so it can be reused, making it economical. [Ventilation holes prevent stuffiness] The ventilation holes promote airflow, preventing stuffiness even when worn for long periods of time, making the pack comfortable and dry. This doubles your comfort on hot summer days. [About Warranty] Our store accepts returns, exchanges, and refunds within 7 days of the product's arrival date, so you can purchase with confidence. blue Body size: 218mm x 250mm, Body weight: 180g black Body size: 230mm x 280mm, Body weight: 280g ivory Body size: 230mm x 280mm, Body weight: 250g