Applicable gender: neutral / both sexes Cover opening method: belt pulling buckle Lining texture: Polyester Size: 30cm wide, 15cm thick, 40cm high Color: black, khaki, coffee, lake blue Function: breathable, wear resistant Style: Korean version Bag internal structure: zipper bag, mobile phone bag, certificate bag, sandwich zipper bag, computer bag, camera bag Number of shoulder straps: Double Capacity: 20-35l Multi purpose: a great rucksack for hiking, camping, traveling, shopping, school, outdoor activities or work. High density rucksack, rucksack, schoolbag or schoolbag, suitable for men, women, students and people of all ages. Large capacity: enough to accommodate daily necessities such as laptop, iPad, lunch, camera, shaving equipment, clothing or other accessories you need Retro Design: the backpack adopts retro design, with top drawstring, snap closure and flap; Additional zipper front pocket closure for internal security.