Black Widow is an innovative liquid chalk formula specifically designed for CrossFit and weight lifting athletes. Chalk typically rubs off during a long sweaty workout. Not anymore. Black Widow Chalk is liquid chalk formulated to keep your hands drier, longer. Developed by competitive athletes, Spider Chalk uses laboratory-grade magnesium carbonate, the driest chalk on the planet. INSTRUCTIONS WASH HANDS so the chalk will stick. Shake the bottle. Shake again. Squirt a small amount into hand. Rub hands together. Wave hands. BENEFITS Lasts Longer: Stays on your hand for the entire workout. Our formula includes 2 non-toxic bonding agents so the chalk lasts longer than regular blocks. Pure: Use pure, lab-tested magnesium carbonate. Spider Chalk is the only chalk with that level of purity and you can feel the difference immediately. No Mess: Doesn't rub off onto rocks, clothes, or gym equipment. Not Banned: Can be used in any gym environment including hotels, large gyms, CrossFit boxes and climbing gyms where powder chalk is banned. SPECIFICATIONS Made in America Size: 4 oz. Bottle Ingredients: Pure, laboratory-grade magnesium carbonate Tested & Approved: Used by top athletes for Bouldering, Rock Climbing, Weightlifting and CrossFit Spider Chalk Advantage: Stays on your hand for the entire workout. Our formula includes 2 non-toxic bonding agents so the chalk lasts longer than regular blocks.