The Brooks Plump grips are made of natural leather, the same long wearing leather used for their saddle tops. Each grip is made with a stack of leather washers cut from the scrap of their saddle tops. These washers are held together by 3 spokes, enabling the grip to be adjusted to the desired length. The standard length of each grip is 130 mm, but each grip can be shortened to the desired length independently. The grips are delivered in a box containing shorter 80 mm spokes to make them even shorter.