Thank you for viewing! ▪️ First come, first served! ▪️ Initial defect guarantee included ▪️ Ships within 48 hours ▪️ Discounts available for bulk purchases Persistent cooling with the latest PCM cooling technology: A cooling pad that can be used as a backpack when going out in the summer, commuting, going to school, shopping, etc. It reduces stuffiness on your back. The phase change material (PCM gel) that uses NASA technology naturally dissociates below 28°C and achieves continuous cooling when combined with a cool backpack. It maintains coolness for 60-90 minutes in an environment of 25°C to 35°C (less energy than conventional coolants). It keeps your back cool and prevents sweat odor with the physical phase change principle of "ice that doesn't melt." Safe for adults and children. As a heatstroke prevention tool, it is designed with safety in mind for both adults and children. Versatile attachments for all situations: Prevents back sweat during commuting, heatstroke prevention for elementary school students, a cool sensation for outdoor activities (fishing, fireworks displays), and multi-use for child seats and strollers. When wearing a backpack, use it as a cooling pad; when removed, it quickly transforms into a cool cushion or cool pillow. It releases heat from your back during commuting and going to school, and cools naturally without the risk of frostbite. A multi-use design that combines cooling and heat retention. 【Ergonomic Lightweight Design】22cm x 28cm size optimized for backpacks (compatible with all types of outdoor backpacks). The 3D shape fits your back and allows you to spend your time cool and comfortably. The 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) and can be stored. The back pad with ventilation holes promotes the circulation of cool air, prevents condensation, and improves breathability. Adjustable clips are included for easy installation in 10 seconds. We have many other wonderful products for sale! Further discounts are available for bulk purchases! #AinoShop Management number: 14-865$$580