Fit For Life from the ground up. But why Cork? It's not just a sustainable material, it's actually carbon negative. Carbon negative means the amount of CO2 emissions you remove from the atmosphere is bigger than the amount of CO2 emissions you put into the atmosphere.. That means for every 1 gram of Cork, it offsets 22.4 grams of Carbon. It might not be much from us but it's a step in the right direction away from your conventional foam rollers. The first step of many.. Dimensions: 183cm x 66cm x 0.3cm (Natural Rubber Bottom)