New, Unused ★ Genki 【2025】 Backpack Cooling Pad Color: Black ✔️ Continuous Cooling with the Latest PCM Cooling Technology: Reduces back sweat. Phase change material (PCM gel) adopted from NASA technology freezes naturally below 28°C, achieving continuous cooling when combined with a cool backpack. Keeps you cool for 60-90 minutes in an environment of 25-35°C (more energy-efficient than conventional cooling materials). The physical phase change principle, like "ice that doesn't melt," keeps your back cool and prevents sweat odor. Safe for use by adults and children. ✔️ Versatile Application for All Scenes: From preventing back sweat during commutes to heatstroke prevention for elementary school students, 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; when removed, it quickly transforms into a cool cushion or cooling pillow. Prevents heatstroke with natural cooling that eliminates the risk of frostbite. Multi-use design that balances cooling effects and heat countermeasures. ✔️ Ergonomic × Lightweight Design: Optimized 22 x 28 cm size for backpacks (compatible with 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 thick 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 installation in 10 seconds, even for children. ✔️ High-Quality Materials for Safe and Lasting Use: Uses German-made biodegradable PCM (TÜV biodegradation certification). 3-layer barrier structure completely prevents frost and condensation. Passes a pressure resistance test 3 times (30,000 times) the JIS S 4057 standard. Medical device-level flexible TPU material achieves natural freezing below 28°C (zero risk of frostbite). Uncolored ink technology with a color fading rate of less than 0.1% after 1000 washes + antibacterial treatment thoroughly suppresses mold/odor. ✔️ Thorough Quality Assurance with Japanese Quality Control: Produced in-house at an ISO9001 certified factory. ✔️ Can be used in various situations such as commuting, sports, outdoor activities, mountain climbing, hiking, fishing, camping, etc. Immediate purchase ◎