Thank you for viewing! ☆ We will ship anonymously. ☆ We are open to price negotiations. Please contact us in the comments. ☆ Initial defect guarantee. (Defective items will be described in the description. We will address any defects not mentioned in the description.) ⚠ The barcode sticker on the back has been peeled off, so it is slightly sticky. There is no problem with the contents. We will clean it as much as possible before shipping, but please refrain from purchasing if you are looking for a perfect box. 【Product Description】 As a cooling pad for backpacks during outings, commutes, school, and shopping, it reduces back sweat. NASA technology-adopted phase change material (PCM gel) naturally freezes below 28°C, and when combined with a cool backpack, it achieves sustained cooling. It keeps you cool for 60-90 minutes in an environment of 25-35°C (more energy-efficient than conventional cooling materials). Using the physical phase change principle like "ice that doesn't melt," it keeps your back cool and prevents body odor. Safe for use by adults and children. As a heatstroke prevention item, it is designed for safety for both adults and children. From preventing back sweat during commutes to preventing heatstroke during elementary school commutes, cooling during outdoor activities (fishing/fireworks displays), and multi-use for car seats/strollers. When attached to a backpack, it functions as a cooling pad, and when removed, it quickly transforms into a cool cushion or cooling pillow. It shuts out the heat on your child's back during their commute, preventing heatstroke with natural cooling that eliminates the risk of frostbite. A multi-use design that balances cooling effects and heat countermeasures. We have many other wonderful products for sale!! ↓ Further discounts are available for bulk purchases #Chii'sShop Management Number: 002-$$580