Teammates must work together to lift their rope handles and legs in unison to walk Cooper™. Unlike other walkers, each piece of Cooper™ moves independently from the others so it can swivel and move in different formations for an exciting challenge. Our widest platforms are 6" wide x 1-1/8" thick (15 cm x 3 cm) for increased stability. Platforms have rubber inserts on bottom to protect floors, with no foot straps to bind the feet. Solid 1/4" dia (1 cm) ropes with comfortable foam handles attach to the platform. Attached bolts allow you to easily add and remove pieces for multiple users. Expand Cooper™ to accommodate multiple users with the Add-On that includes 2 pieces that each add 14" (36 cm) of length (sold separately).