Tansu no Gen Releases Adult L-Size Backpack Cooling Pad to Prevent Back Stuffiness

Tansu no Gen has released an L-size model of its 'Backpack Cooling Pad' to accommodate larger adult backpacks, complementing the existing schoolbag M-size. The product features PCM (Phase Change Material), which naturally freezes below 28C. This material helps reduce stuffiness and sweat during summer commutes. The L-size pad measures 38x27cm and weighs about 300g, while the M-size measures 23x28cm and weighs about 200g. It is 30% lighter than water to avoid placing extra burden on users. Unlike standard pads, it features an independent multi-cell structure that dynamically bends to fit the user's back and reduces discomfort. It requires no refrigeration, freezing naturally in 5-7 hours. Alternatively, it can be cooled in cold water/refrigerator in 15 minutes or ice water/freezer in 10 minutes for repeat use without condensation. The product is available at Tansu no Gen's official store, Rakuten, and Yahoo Shopping.