Eastsport Multipurpose Expandable Backpack with Multiple Compartments and External USB Charging Port - Black Large Spacious Two Main Compartments with interior secure sleeve that protects your devices on-the-go (up to 15" laptop/tablet) and 3 mesh organizational pockets Two Front Pockets for ultimate organization; Two Side Zippered Pockets for easy hydration on the go; Zip-around Expandability up to 2.5" in. makes fitting all your essentials easier External USB Port with interior charging cable (Charging battery NOT included); Made out of durable water resistant polyester; SureSnap Zipper Pulls keep your belongings safe and secure HeatEscape Padded Mesh Back Ventilation System ensures your back will be comfortable and cool; Comfort Rubberized Top Handle; Ultra Padded Adjustable Shoulder Straps MSRP $50; Limited Lifetime Guarantee; Dimensions: 18 by 13.5 by 9.5 Inches