OSTROVIT Magnésium en cube (57 g)

OSTROVIT Magnezja w kostce is a solid block of pure magnesium carbonate — a trusted grip-enhancing chalk used by athletes across weightlifting, powerlifting, gymnastics, climbing and other strength and technical sports. Made from a single ingredient, it contains no additives, binders or fillers, making it a clean and straightforward choice for training support.

Magnesium carbonate chalk works by absorbing moisture from the skin, reducing slippage between the hand and bar, ring, hold or implement. Its compact block format allows precise, controlled application: simply break off or crush the required amount and apply directly to the palms and fingers before or during your session.

At 57 g net weight, this block offers a practical, portable supply that can be easily carried to the gym, box or crag. The single-ingredient formula is suitable for vegan and vegetarian athletes, and is free from gluten and lactose.