The latest addition to our line of engineered chalk, made from pure magnesium carbonateECO Gold is the byproduct of the desalination process, as opposed to being mined from the earth like typical climbing chalk, making it purer and eco-friendlier than other chalk products on the market. In other words, ECO Gold is as easy on the environment as it is on your hands. Plus, thanks to its pure form, this chalk is extra absorbent, offering superior drying power and effectively enhancing your grip.