The idea attempts to tie in all the three brands by overlaying a common design element throughout the store -  Metal pipes.

Why pipes?

The sheer sight  of pipes interweaving and complimenting each other offers a very interesting choice as a design element. Moreover, the whole arrangement stays subtly in the background without eating into the merchandise on display, while at the same time evoking an industrial/grungy look within the shop space. Pressure wheels  and valves between the arrangements serve break the monotony and complete the overall look.