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The ChalkStopper chalk bag is one of the best chalk bags on the market, with a magnesium anti-loss system that prevents it from falling out of the backpack, at the foot of the track or falls while climbing or training.
This magnesera has been developed after a long analysis of the problems of climbers, climbing halls and climbing walls, where there is always a common problem: Magnesium in suspension in the air.
With the ChalkStopper magnesera the loss of magnesium is reduced by 80% thanks to its automatic magnetic closure
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