Racing Lane’s Flow-through controls water turbulence by allowing wave energy to be dispersed along the length of the lane, creating the optimum environment for the fastest swim times. Each lane consists of a series of a 120mm or 150mm polyethylene disks and donuts strung on a stainless steel cable. Each of these disks is designed to rotate independently of the others, thereby allowing the wave energy to be absorbed and dispersed along the channel within the lane. Competitor lanes come completely assembled. Standard Colors – Red, White, Blue, Yellow.