Fitting 15.6", the HP Prelude Pro Backpack is made of sturdy fabric with water-resistant coating, padded pockets, a zipper, and slip pockets. Adjustable Shoulder Straps with Padding: 15.6-inch Recycled HP Prelude Pro Backpack 1X644AA Wear a fashionable, long-lasting backpack that was made from recycled fabric and carefully considered the environment as you commute. When you are carrying your devices from work, you can rest easy knowing that the HP Prelude Pro Recycled Backpack has safety features.