High performance pure magnesium carbonate, moisture absorbing chalk. Available in 100g, 200g, and 300g sizes. Comes in a handy zip lock resealable bag for spill-free storage. Just open and pour some chalk into your chalk bag or refillable chalk balls and close again with minimal mess and dust. It is the perfect companion for improving your lifting performance and reduced sweating. The chalk has a fine texture and purity gets deeper in the creases of your hands giving you superior grip. Psychi chalk is long lasting so you do not need to chalk up every few minutes. Reduced tearing, dryness and calluses.