Etra chalk is made of magnesium carbonate, an inorganic compound that is insoluble in water. The chalk will not dissolve with water or sweat on your hands. Instead, any moisture is absorbed by the chalk. This decreases your risk of slipping while increasing your grip, friction and performance for any sport. If you've never used chalk before you will be pleasantly surprised by how strong your grip will become! Each order comes with one (3.5"x3.5"x1.7") (2.3 oz) block of chalk. Non-staining, and non-toxic.
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