LIGHTWEIGHT DESIGN: Backpack size: 11*7*16 inch, weight about 0.65 lbs, lightweight and stylish design, suitable for daily carry, fits up to 14 inch laptop. Back Luggage StrapCasual Daypack has a luggage strap on the back, convenient to travel. EXTRA LARGE STORAGE SPACE: School backpack with built-in laptop compartment and large storage space. Suitable for school, daily leisure, work, traveling. WIDE APPLICABILITY: Casual backpacks are available in black and blue for men and women. ERGONOMIC & COMFORTABLE DESIGN: Comfortable adjustable shoulder straps are designed to prevent the straps from slipping for a better fit.