✨ Cooling Backpack Pad ✨ #nami Instant purchase welcome ★ I am also exhibiting other items♪ ✅ Reduces back sweat as a cooling pad for backpacks during summer outings, commutes, school commutes, and shopping. Phase change material (PCM gel) adopted from NASA technology naturally freezes below 28°C, and when combined with a cool backpack, it achieves continuous cooling. 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 sweat 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 heatstroke prevention for elementary school students during their commute, 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 and prevents heatstroke with natural cooling that poses no risk of frostbite. ✅ Optimized 22 x 28 cm size for backpacks (compatible with all types of backpacks from school bags to outdoor backpacks). 3D shape that fits the back for a cool, close fit. Ergonomic back fit shape + independent filling structure maintains a flat fit even after repeated use. Ultra-lightweight design of 6mm thickness and 190g (50% smaller than conventional products) for excellent storage. Back pad with ventilation holes promotes cool air circulation, preventing condensation and improving breathability. Adjustable clips for easy attachment in 10 seconds, even for children. ✅ High-quality 3-layer barrier structure completely prevents frost and condensation. Passes the JIS S 4057 standard's 3x (30,000 times) pressure resistance test. Medical device-level flexible TPU material realizes natural freezing below 28°C (zero risk of frostbite). Color fading rate of less than 0.1% after 1000 washes with uncolored ink technology + antibacterial treatment thoroughly suppresses mold/odor. 311 $$1580 $162.215.1000