Back support system and air mesh shoulder straps for ergonomic, convenient carriage. Spreads weight of tools instead of lifting in one hand. Durable 600 x 600 denier fabric. 50 Pockets / tool holders for a wide variety of tools, including longer tools on the side such a level. Waterproof plastic bottom protects against moisture and dirt. Removable dividers system with tool holders is easily detachable, with handle for easy carriage. Spreads to form a work surface.