Although it's unused, the bag has been opened, so I've listed it as "Like New." Thank you for looking! :) I have various other items for sale too♪ #Chihiro'sShop♡ ♡All items are free shipping ♡Instant purchase OK!! ♡Due to shipping costs, items may be shipped without their boxes or bags. ♡Please be sure to read my profile ^ ^ ♡When I lower the price, you'll receive a notification or comment, so please "like" any items you're interested in ^ ^ [Natural Freezing Below 28°C & Sweat Prevention] This cooling sheet/cooling pad helps prevent stuffiness in backpacks and uses PCM material, which is lighter than water and instantly becomes cold. PCM is derived from palm oil from the coconut family and freezes naturally at room temperatures below 28 degrees Celsius. [Versatile for Various Scenes, Summer Back Sweat Prevention] As a summer heat countermeasure, this cool sheet is perfect for back sweat and stuffiness and fits any backpack. The size is 25*31cm and is recommended for outdoor backpacks, school bags, children's backpacks, business backpacks, as well as car seat cushions and strollers. [Long-lasting Coldness & Reusable] This contact cooling pad for school bags uses innovative cooling material, so you don't have to worry about condensation wetting bedding or clothing. The backpack back cooling pad makes your back feel cool even when you're wearing a backpack. It's perfect for preventing stuffiness and heat in backpacks. It's not as cold as regular ice, so there's no risk of cold injury, and it's safe for both adults and children to use. [Easy Installation] The backpack back cooling pad can be installed simply by securing it in four places with fasteners. Using the rubber band with an adjuster, you can easily install it by adjusting it to the width of the shoulder straps. If it melts and is no longer cold, you can freeze it again by placing it in a cool space with air conditioning, and it can be used repeatedly. [Instant Cooling Pad & Product Features] The cooling pad for backpacks is 24cm long and 30cm wide and weighs 300g. The outside is made of TPU (thermoplastic polyurethane) material, and the inside is made of PCM (octadecane). It's a product that keeps your back cool and comfortable, perfect for the hot season. This special material, called "non-melting ice," was developed to help customers spend their summers comfortably. Thank you for looking. 143