I used this bag about once a week for about 3 years. There is some fading due to use, but I think it's still in good condition. Below is the official description: -------- A collaboration bag between Porter Classic and the bedding manufacturer "Showa Nishikawa." This is the "Newton" series, which uses "muatsu," a futon that disperses body weight, from "Showa Nishikawa" for the shoulder straps. This next-generation bag, jointly developed over three years, makes your luggage feel lighter. "Muatsu," which disperses weight based on ergonomics, is used for the shoulder straps. It eliminates the stress of feeling the weight when carrying luggage for long periods. In addition, it uses durable nylon material. The design is simple and can be used for both private and work purposes. 【muatsu/Muatsu】 The originator of healthy futons, with over 4 million units sold in 47 years since its release. The unique egg shape was developed with inspiration from the tip of a space rocket. It is used in over 100 hospitals nationwide because it disperses the received pressure (body weight) horizontally and radially in a balanced manner. [Porter Classic] The origin of Porter Classic is the desire to "make things to world standards," which means creating simple and standard items that will be loved for a long time without being caught up in trends. They are committed to "Made in Japan" and are a clothing and bag manufacturer that combines design and functionality. Body Height: Approximately 49cm Width: Approximately 32cm Depth: 15cm Color Black Color...Black系 (Black-based)