ULTIMATE PERFORMANCE FINE CHALK POWDERMade from the highest quality natural carbonate of magnesia NO unhealthy drying agents or additives. Perfect for climbing, gymnastics, weightlifting, athletics and cross fit. Take a look at the rest of our climbing range for liquid chalk, chalk bags for climbing and a refillable chalk ball. FEATURES: No additive or drying agents Made from high quality natural carbonate of magnesia Use as a refill for the UP Chalk Ball