Thank you for viewing! ❤️ Price negotiation → Highly welcome ⭐️ First come, first served ⭐️ Initial defect warranty included 【Latest PCM Cold Technology】 Phase change material (PCM gel) adopted from NASA technology naturally freezes below 28°C Cooling effect lasts for 60-90 minutes in an environment of 25-35°C More energy-efficient than conventional coolants, prevents sweat odor, and keeps your back cool Designed for heatstroke prevention, safe for adults and children 【Versatile for all scenes】 Widely applicable for commuting, school, outdoor activities, car seats, strollers, etc. Can be used as a cooling pad when attached to a backpack, and as a cool cushion or cooling pillow when removed Natural cooling for children's school commutes, preventing heatstroke and the risk of frostbite 【Ergonomic × Lightweight Design】 22 x 28cm size fits perfectly in a backpack 3D shape adheres to the back, maintaining a flat fit even after repeated use Lightweight design of 6mm thickness and 190g, with good storage Ventilation holes promote cool air circulation and prevent condensation 【High-quality materials for safety and durability】 Uses German biodegradable PCM (TÜV biodegradation certification) 3-layer barrier structure prevents frosting and condensation Uses medical device-level flexible TPU material Uncolored ink with a color fading rate of less than 0.1%, antibacterial treatment prevents mold and odor Thorough quality control in Japan Produced in our own factory with ISO9001 certification All products are inspected before shipment ❤️ We have many other items for sale! ↓ Further discounts available for bulk purchases (*^^*) ↓ #YUKA'sShop Management number: 13-796$$580