Thank you for viewing! Instant purchase is welcome!!! ✨Follow-up discount available✨ Please read the profile before considering ❤️ This is a large-capacity, multi-functional bag! Waterproof fabric used Can store tablets and computers Expandable gusset for increased capacity! USB port operation is unconfirmed. Please understand that there may be minor scratches or stains as it is a stored item. [37L Large Capacity & Gusset Expansion] Size: 48*32*17cm (before expansion: 22L) / 48*32*29cm (after expansion: 37L); By expanding the gusset, the storage capacity is smartly increased from 22L to 37L, and it can easily store a 17-inch laptop, documents, A4 files, B4 files, and 2-3 days' worth of clothes, notebooks, pens, wallets, folding umbrellas, water bottles, and other essential items for modern lifestyles. Perfect for commuting, going to school, going to the gym, as well as business trips and trips of 2-3 nights. [Water-repellent specification to prepare for sudden rain] 900D carbon PU coating Oxford increases water resistance and gives a subtle luster to the appearance. [Multi-functional, 180-degree opening/closing, wet and dry separation, anti-theft, USB charging port] Packed with functions that meet the needs of modern life. ① The main pocket can be opened approximately 180° like a suitcase, allowing for smooth access. ② An additional wet and dry separation pocket is provided to easily separate wet and dry clothes and maintain cleanliness. ③ A hidden pocket is attached to the back, so you can safely store valuables such as wallets and smartphones. ④ USB charging possible: There is a USB charging port on the side, allowing you to charge while wearing it. ⑤ Comes with a key holder to attach keys (eliminates the hassle of searching for keys) [Excellent breathability] The back and the back of the straps use a mesh material with good breathability on top of the cushioning material, reducing the burden on the shoulders and back while providing a comfortable fit without stuffiness. A chest belt is standard equipment, effectively distributing the burden on the shoulders and back, and also preventing shoulder slippage. The back can be set up with a suitcase. Especially suitable for office workers commuting. An emergency whistle has been added, applicable for emergencies, disaster prevention, outdoor activities, camping, etc. We have many other wonderful products on sale♡ ↓ Further discounts are available for bulk purchases. #KINAshop Thank you for viewing.