A spacious gear bag that converts into a useful backpack. Excellent for practitioners on the road. Sturdy nylon construction with 3 handy zipper pockets. Small is 24"(L)x12"(W)x12"(H, large is 30"(L)x13"(W)x14"(H). Staff Picks by Helen: "fits everything I need in one bag. and makes it easier to carry around when I commute."