Eastsport Oversized Expandable Backpack with removable EasyWash bag 6 separate compartments and 3 interior pockets allow for ultimate organization Zip-around expandability up to 2.5" in makes fitting all your essentials easier HeatEscape padded mesh back ventilation system ensures your back will be comfortable and cool Base zip compartment with removable EasyWash bag lets you separate the smart way MSRP 49.99; Limited Lifetime Guarantee; Dimensions: 18 by 12.5 by 7 Inches