Voluminous and smartly designed. Side compression straps. Haul handles on all four sides. Rigid bottom. One exterior zip pocket. Main zipper has overlapping rings so you can lock or zip tie the two zipper tabs together. About 29" long by 20" wide. At the most expanded depth it would be about 12" deep. However the tough fabric could bulge a bit it you want to get in more clothes. It can be stuffed full. Beefy wheels. HERE is the best part! It folds up into a Velcro secured triangle for easy storage. Super compact. All my clothes, shoes, rack, helmet and rope easily fit. Minor tear on bottom see last photo. This is on the rubber covering to the rigid base between the wheels. It doesn't affect the fabric or integrity of the main compartment. Small stain inside that wouldn't clean up with water.