KAZIM 16" Cool Rolltop Backpack Travel Rucksack Water-resistant polyester from inside out Tall x Width x Depth: 16.3" x 9.4" x 4.5" (Tall 20.5" when open), fits 15.6 inches laptop Stylish expandable rolltop rucksack allows you to adapt the capacity as needed Lightweight construction daypack, with padded shoulder for comfortable carrying Multipockets - water bottle holder, laptop compartment, handy cell phone pouch and more Minimalist book bag perfect for travel, college, work, gym, biking, hiking, etc. 12-month warranty against manufacturing defects. 7/24 happiness customer support