Thank you for viewing! ❤️ Price negotiations are welcome! ⭐️ First come, first served - only one available! ⭐️ Initial defect guarantee included * Opened for inspection and photography, but it's a new, unused item! Color: Beige Suitable for: Children to adults Size: 22 x 28 cm Uses: Effective for heatstroke prevention ⭕️ Can be used in various places such as backpacks, rucksacks, pillows, sprains, bruises, and chairs! ✅ Latest PCM cooling technology for sustained cooling: As a cooling pad for backpacks during summer outings, commutes, school, and shopping, it reduces back sweat. The phase change material (PCM gel) adopted from NASA technology freezes naturally below 28°C, and combined with a cool rucksack, it achieves sustained cooling. It keeps you cool for 60-90 minutes in an environment of 25-35°C (more energy-efficient than conventional coolants). The physical phase change principle, like "ice that doesn't melt," keeps your back cool and prevents sweat odor. Safe for use by both adults and children. Designed for safety for both adults and children as a heatstroke prevention item. * We may change the shipping method from Rakuraku Mercari to Yu-Yu Mercari. Please understand. ❤️ We have many other wonderful products for sale too♡ ↓ Further discounts available for bulk purchases (=^x^=)↓ #MookSHOP Management Number: 815-$$580