https://live.staticflickr.com/65535/50841513797_1699403bde_c.jpg **Expandable roll mouth layer** https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_145061_image_big.gif?1576724911 ▲ Put shoes or dirty clothes here, and separate them from the main layer, so that they will not interfere with each other. **Independent protective laptop layer** https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_139005_image_big.jpg?1574705072 ▲ The side zipper can be quickly accessed directly, and can fit a laptop or tablet up to 15 inches. ＊The size of 15-inch laptops of various brands is slightly different. Please note that the addition and subtraction of the backpack laptop layer can be put into an Apple Macbook 15" laptop (length 24x width 35x height 1.6cm) after actual measurement. **Independent quick release package** https://live.staticflickr.com/65535/50712405173_751523c534_k.jpg https://upload.cc/i1/2019/11/13/gdnj54.gif ▲ The small bag is usually combined with the inner layer of the big bag with a magnetic buckle, and can be separated by a light pull to become an independent personal small bag. **600D Water Repellent Polyester Fabric** https://live.staticflickr.com/65535/50713011577_0043e0ccf3_k.jpg ▲ The big bag is made of wool-feeling 600D polyester fiber/ the small bag is made of soft and comfortable 420D nylon. The inner and outer textures are different, and both are water repellent. **Carry comfortably, cover to reduce pressure** https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_145068_image_big.gif?1576725074 ▲ The back cushion is thickened to 18mm to relieve pressure and strive for comfort. **Selected factory accessories** https://live.staticflickr.com/65535/50713011992_b6c2f31a14_k.jpg ▲ Germany Fidlock magnetic buckle / American Duraflex military grade press buckle / Japan YKK waterproof zipper https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_145066_image_big.gif?1576725042 ▲ The front magnetic buckle strap can fix the backpack and the luggage handle, and you can remove the burden on your shoulders at any time. https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_145064_image_big.gif?1576724986 ▲ The combination of large and small bags adopts German Fidlock magnetic buckle, which can be easily buckled without special alignment. **Two small bag options** https://live.staticflickr.com/65535/50718344328_06051abd7e_h.jpg ▲ For the detailed introduction of the small square bag, please go here: https://www.pinkoi.com/product/A6a8mYjt https://live.staticflickr.com/65535/50589252946_06e46ded53_k.jpg ▲ For the detailed introduction of the small round bag, please go here: https://www.pinkoi.com/product/Lc2WAc6s **Layered description** https://s3-ap-northeast-1.amazonaws.com/zeczec-prod/asset_139004_image_big.jpg?1574705053 ▲ There are 6 inner compartments including small bags, which are not too many to make you forget where things are placed, and not too few to squeeze them all together. Learn more about usage scenarios ▶ https://www.youtube.com/watch?v=bvlyjUsFjTU&t=4s **Specifications at a glance** Large package specifications __ __ Size: 50 x 33 x 20 cm Weight: 1100 g Capacity: 20-25 L Laptop compatible specifications: within 15 inches Fabric material: 600D Polyester + PVC waterproof layer Origin: Taiwan Accessories: YKK® waterproof zipper/ Fidlock® magnetic fastener/ WJ® fastener/ Duraflex® fastener Small package specifications __ __ Size: 26 x 20 x 2 cm Weight: 150g Fabric material: 420D Nylon Ripstop anti-tear and water-repellent plaid Origin: Taiwan Accessories: YKK® zipper/ WJ® fastener/ Fidlock® magnetic fastener ＊There is a waterproof layer on the back of the plus and minus bag fabric. If it is raining too much or staying in the rain for too long, water will still enter from the lines and gaps of the backpack. Therefore, the waterproof degree can only be defined as water repellent, but sufficient Cope with the daily light rain and overturning the water glass.