KFD Gym Chalk Magnesium KFD Gym Chalk is pure, 100% magnesium carbonate. Gym chalk seems to be necessary is sports like weightlifting, crossfit, climbing or powerlifting. It increases the friction of surfaces, which improves grip strength in exercises, such as deadlifts, or prevents slipping on the bench while pressing the barbell. KFD Gym Chalk is made from highest quality, pure raw material without any additions, which guarantees optimal physical properties. Instruction of Use: Rub a small amount of magnesia into your hands before performing the exercise.
