Use original plastic instead of the recycled plastic for the cup holder, so it will not crack, looks more smooth and last much longer * Use #8 fiber zipper instead of the #5 plastic zipper, much stronger zipper and easier to zip and unzip. * Use Nylon instead of plastic for all the joints, much more flexible for the joints * Open Size: 33"(L) x 14.5"(W) x 38.5"(H) Folded Size: 33.5"(L) x 17"(W) x 8"(H) * Cargo Measurement: 21"(L) x 13.5"(W) x 20"(H) Weight Capacity: 30LB