It's not always easy to know when you might need extra space in your bag. This one's expandable size comes in handy when a few extra inches of space are needed on road trips, at the gym, and more. Details: Unzips in the middle to expand by 4" Inside features a hanging zip pocket and a gusseted slip pocket perfect for a phone. Rolled handles for a comfortable carry. Zip-top closure. Dimensions: fully extended 16" w x 18" h x 5 ½" d with 12" strap drop. Care Tips: Machine wash cold, only non-chlorine bleach if needed; lay flat to dry.