Specification: Large storage space, large capacity main pocket for A4 magazines, everyday clothes and other items.Breathable back, comfortable to carry, back made of breathable sponge, soft, comfortable and breathable.Material: Polyester or canvasOpening method: zipperApplicable gender: neutralFunction: breathable, waterproof and wear-resistantWeight Dimensions: Three-piece set: 0.55kg 17 inch backpack: 0.30kg 44x28x13cm Satchel: 0.18kg 25x19x8cm Pen case: 0.07kg 22x11x5cm The package contains: 1x Pen bag or1x Satchel or1xBackpack or3pcs (pen bagandsatchelandbackpack)Note:1. Due to manual measurement, there may be a slight tolerance of 1-3cm.2. Due to differences between different monitors, the picture may not reflect the actual color of the item.3. If you need to buy a three-piece set (pen bag and satchel and backpack), you must choose the SKU of 3Pcs. If you buy a pencil case, the package you receive will only be a pencil case, not a three-piece set. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store