Chalk for removing sweat and moisture from the palms of your hands or skin. Chalk is a solid block of magnesium carbonate chalk which is popular among cross-fit enthusiasts, weightlifters, gymnasts and rock climbers as a reliable grip enhancer. Weightlifting Chalk absorbs moisture from the skin of your palms and fingers to provide a stable, long lasting and confident grip. The block can be crumbled up into a powder, or the chalk can be applied directly to the skin by rubbing the block. Single block contains 2oz of compressed magnesium carbonate chalk. Also available in a 2 pack or a box of 8 blocks.