Mosher Mountain Gear Refillable Chalk Ball for Gymnastics, Climbing, CrossFit and Weight Lifting 100% pure Magnesium Carbonate Chalk Ball (Powdered chalk in a cotton sack)  NO hidden components, simple and well made. Greatly improves grip for, rock climbing, bouldering, gymnastics, weight lifting, etc LESS MESS and lasts longer than block chalk  no more spilled chalk like powdered chalk Save money- refill chalk with chalk from Mosher Mountain Gear or elsewhere with an easily opening cinch Get this item as part of a combo with a chalk bag ( ASIN B01EJOOQ2U )