The Go Box 2, which is 24" wide X 9" tall X 11" deep when closed, has built-in storage for 38 spools of thread, 11 colors of dubbing, and 10 sizes of hooks. Five springs on either side of the workspace keep tools in place, with two larger springs to hold bottles of cement or paint, and 4 springs on the work surface keep tying materials in place even when tying outside in the wind. Two magnets on the work surface keep your tools handy and also hold finished flies while the head cement dries. A clamp in the center holds a vise, so you can tie right on the box. The drawer has a cedar bottom to keep your materials safe from critters.