CAP Gym Chalk is formulated to help keep the user's hands dry while working out for improved grip. Gym chalk reduces hand moisture and considerably lowers slippage, which can cause serious injury. This type of workout chalk is made with 100% pure magnesium carbonate and contains no fillers. It comes in two 2oz blocks that can either be broken up or used as it, depending on your preference. The CAP Gym Chalk is suitable for a variety of sports, including weightlifting, gymnastics and rock climbing.