I used it once, but the size didn't suit me, so I'm selling it. *Please refrain from price negotiations. [Overview] This backpack features a patent-pending "diagonal strap" structure that prevents "slippage" and "swaying" during walking, reducing shoulder strain by 20% compared to backpacks with parallel straps! It's also ideal for those with sloping shoulders, rounded shoulders, and a hunched back. With 14 pockets for easy organization, it's compact yet has a large capacity and is easy to use, like a mini suitcase. Prevents "swaying" and fits the body! Reduces shoulder strain by 20% compared to backpacks with parallel straps! Good news for those with sloping shoulders, rounded shoulders, and a hunched back! Say goodbye to bag slippage, swaying, and fatigue! Features a patent-pending "diagonal strap" structure! Like a mini suitcase! Compact yet opens wide for a large capacity! Functional storage with 14 convenient pockets [Details] Product Name: FIXPAC (SQUEAR) Product Code: KTP0000002 Manufacturer: KRONTIP Co., Ltd. Size: Height 45cm x Width 33cm x Depth 14cm Weight: Approximately 1020g Material: Nylon, Polyester Country of Origin: Taiwan Retail Price: ¥21,780 Search terms Business bag Black Square Backpack Rucksack