Petzl Sakab is a chalk bag for bouldering. Large and comfortable, it is perfect for sprinkling your hands with white powder before climbing the boulder problem. Its large opening allows entry to both hands, the closure with the magnet ensures that during your training session no magnesium is scattered while the roo-top closure increases safety during transport without running the risk to dirty the backpack. Then there are two comfortable handles but also a toothbrush holder and two pockets with zip closure. Petzl Sakab boulder chalk bag