GOLDSTAR Ultra Lightweight Nylon Backpack Foldable Daypack School Bag Pack for Day Travel Sport Cycling Hiking Camping (Black) DURABLE - Made of Selected Wear-resistant Nylon Material. Durable Abrasion Resistant SBS Metal Zipper. Reinforced more than 14 places with Bartack Process CAPACITY - Size unfolded: 40cm * 32cm * 15cm (L*W*H), Size Folded: 23cm *19cm, Volume: 20L FOLDABLE - Easy to fold with only 5 steps and can put into a hiking bag, convenient for travel STURDY - Design of ventilating sash with sturdy bartack, release the sense of burden and be able to carry heavy stuff GUARANTEE: 3-Month Warranty, Any Other Problem, Please Feel Free to Contact Us