I've been using this for about a year on my days off. There are some stains here and there, and the leather inside has changed color. The product itself is still usable, so I'd be happy if someone who likes it would buy it. Item details are from the official HP. Specifications: To reduce the burden on the hands, the handle is wrapped in glove leather that fits comfortably in the hand. Cushioning material is inserted in the shoulder area to reduce the burden on the shoulders. Furthermore, nylon reinforcement tape is inserted so you can use it with peace of mind even when you have a lot of luggage. The base of the shoulder strap is reinforced with leather parts. On one side of the side, there is a Velcro pocket that is easy to open by inserting your finger. On the other side, there is a slit pocket for easy access to items like plastic bottles. There is a divider pocket inside the front pocket. The zipper can be opened from either the left or right side. On the back side of the main space, there is a slit pocket that can be secured with plastic parts, and it can hold A4 size items. The key strap in the front pocket is long enough to be used even with keys attached. The zipper cover of the main body is cut diagonally at both ends to allow for smooth opening and closing to the end. Cushioning material is inserted on the back of the main body. A zipper pocket is attached to the back of the main body. Holders for plastic bottles, etc., are attached to both sides of the main space. A bottom plate with cushioning material is attached to the bottom to reduce the impact when placed. The bottom plate can also be raised to one side for use. Materials: The main body uses 420d (denier) high-density woven nylon CORDURA. The back side is urethane coated. Some of the lining uses 210d (denier) nylon with acrylic processing. YKK's EXCELLA, a high-end line, is used for the zippers. Polishing gives it a glossier appearance than regular zippers and makes it smoother. Cowhide leather is used for the accessories. Size: W330 x H450 x D120 Weight: 540g Capacity: 17ℓ *Capacity is only a guide Main fabric: Nylon 100% Backing: Urethane coating Partial use: Cowhide leather Made in Japan