Cramer Gym Chalk Block, Magnesium Carbonate for Better Grip in Gymnastics, Weightlifting, Power Lifting, Pole Fitness, & Rock Climbing, 4 oz. : Amazon.ca: Sports & Outdoors
ProSource Professional Grade Gym Chalk for Cross Fitness, Weightlifting, Gymnastics and Rock Climbing; Magnesium Carbonate; 450 g (8 Blocks) : Amazon.ca: Sports & Outdoors
Magnesium Carbonate Chalk - 5 X Cases of 8 Blocks | Strength Shop
Gym Chalk, Single Block | Fitness Depot
Cerberus Chalk – CERBERUS Strength Canada
Bone Powder Pure Chalk Blocks – Deadpoint Climbing
1102 Block Chalk - Sidea Fitness Company International