The unique features of the Extreme Green system allow the golfer to adjust the slope of the green with the push of a foot. By pushing the side wedge in on one side of a segment, two things happen; one side is raised while simultaneously lowering the other side. This action allows consecutive segments to be adjusted to the desired slope or brake of the practice putting surface.Each segment has 16 available settings which can create a virtually limitless variation of slopes and breaks.The Extreme Green system has a modular design which means any length of green is possible.By adding more segments you may increase the desired length.This also means that you can add on to your existing Extreme Green should you wish to extend it at a later date.The Extreme Green is constructed with an anodized aluminum base and high impact plastic components. The base is supported in the center as well as on both sides which allows for superior strength and durability, allowing multiple golfers the ability to practice on the green at the same time. We believe construction is an important aspect in the overall ability for performance.After all, you may find it comforting to know that leaving it out so anyone can practice on it without fear of damage provides you with peace mind.These three illustrations demonstrate the change angle of the putting surface. The total distance of travel height is 3 inches from side to side.