Bag size: Medium Capacity: 20-35L Internal structure of the bag: zip concealed pocket Flap opening: zip Material: nylon Whether with lock:No Function:Breathable, shock resistant Style:fresh and sweet Accessory type:backpack shoulder pad Number of shoulder straps:double Popular elements:stitching Carrying parts:Soft handle Outer pocket type:Inner patch pocket Size:Width 31cmThickness 14cmHeight 44cm Dimensions are measured manually, there is 1-3cm error normal Description High quality material: made of high quality lightweight canvas, strong and durable with strong stitching and strong shoulder straps, sturdy enough for a large capacity. High quality metal zip to open and close the bag easily Large capacity: the backpack and bag have a capacity of approximately 30 litres, enough to store your daily essentials. You can combine laptops, books and other accessories Simple design: you can make better use of the interior space. It is large enough to hold pens, pencils and other school or office supplies. Other uses such as a travel wallet, bag, make-up bag etc Perfect gift: this backpack set is the perfect gift for friends, children, students and colleagues, for girls, boys, teenagers, adults and women who will love it Suitable for occasions: our school bags are perfect for young girls, children, teenagers, ladies and gentlemen. Suitable for school, university, outdoors, sports, camping, hiking, travel and more