Black Diamond 300g Loose ChalkClimb your way to the top with the Black Diamond 300g Loose Chalk. Made from Magnesium Carbonate, this loose chalk powder quickly coats your hands the right amount of chalk you desire when you re climbing. It also reduces the moisture and sweating in your palms and stays longer than normal chalk. Even if it is extremely humid or scorching hot, the loose chalk gives your hands a tight adhesion and prevents you from slipping. With smooth and fine texture, the loose chalk doesn t make your hands feel too rough so climbing is much easier and less irritating. The loose chalk comes in a 300 g bag, enough for much harder and longer climbs. Whether you re using it for bouldering or wall climbing in the gym, the Black Diamond 300g Loose Chalk will effectively improve your grip.