We have taken the backpack idea and added layers of tool panels to make the ultimate portable tool box. Heavy duty ergonomic shoulder straps allow you to carry everything you need, hands-free. Go up ladders, in to tight places or in to buildings looking like a professional. ToolPak saves time, effort and aggravation by allowing you to take it all with you the first time. No more returns for the tool you forgot, with ToolPak, it's all there.