【Material Description】 Polyester【Accessory Construction】3-in-1 backpack set, 17-inch backpack + lunch bag + pen case【Product Performance】Preferred materials: This product set is made of polyester, which is durable, resistant to shrinkage and stretching.Sturdy and durable: This backpack has strengthened details at the bottom to prevent wrinkles, ensuring the stability of the bottom and enhancing reinforcement to protect the backpack. Adjustable shoulder straps are reinforced. This makes your back feel comfortable.Lightweight and portable: This lunch bag is small in appearance but has a large capacity. It can perfectly match your lunch box, snacks, fruits, even protein milkshake bottles. It meets your daily needs. Easy to carry, can be carried around as you like.Multifunctionality: This pen case can hold pencils, signature pens, erasers, watercolor pens, etc. It has strong functions and wide applicability.【Applicable Scenarios】Suitable for children's daily school trips and leisure day trips, or working professionals who are already employed. It is a very good set combination.【Cleaning Instructions】It is recommended to wipe and clean with a damp cloth regularly.【Special Note】This size data is measured when laid flat. Due to different measurement methods, an error within 8056 cm is considered a normal phenomenon.【Warm Reminder】The display effect of this picture is for reference only. The final effect is subject to the actual product! Due to objective factors such as production batches and machine equipment, slight color differences, position and size errors may occur, and such issues are unavoidable or may exist. If encountered, they are considered normal phenomena and will not be included in the after-sales handling scope.