8 Pack | 1 Pound Box. Mute Sports premium quality white athletic gym chalk comes in 2 oz. blocks. Made of magnesium carbonate which is all-natural, non-toxic and non-staining. Dries your sweat to improve your movements and exercise techniques. Great for any application where you want to increase grip such as functional fitness, ASMR, gymnastics, weightlifting, rock climbing, lifting barbells and body weight movements such as pull-ups and muscle-ups. Keeps your hands dry and sweat-free when rock climbing and bouldering. Stock your home gym or your business.