Cannon Sports White Gym Chalk for Athletes, Magnesium Carbonate for Weightlifting, Gymnastics & Rock Climbing Chalk Blocks (8 - 2oz)
Artistic Gymnastics Hand Guards Buying Guide- What are they & where to buy them? – GMD Activewear Australia
Traction Performance Colored Gym Chalk | Powder Chalk for Gymnastics, Rock Climbing, Weight Lifting & Workouts - Firm Grip Magnesium Carbonate Lifting Powder in Vibrant Colors - Made in USA | 8 oz. Blue
Here's Why Gymnasts Use Chalk and Grips on the Uneven Bars - The New York Times