SPECIFICALLY FOR BOULDERING: Bouldering chalk bag placed on the ground. Large opening and bag capacity allow both hands to easily access the chalk. Semi-rigid sides and base provide excellent stability. SECURE STORAGE: Quick magnetic closure with Complete closure with roll-top to reduce bulk and prevent chalk from escaping during transport. PRACTICAL STORAGE: Flat pocket and expandable pocket with gusseted design, for easy storage and separation of cell phone, keys, tape, energy bars. Elastic brush-holder for optimal storage of two small or medium brushes. PRACTICAL STORAGE: Flat pocket and expandable pocket with gusseted design, for easy storage and separation of cell phone, keys, tape, energy bars. Elastic brush-holder for optimal storage of two small or medium brushes. CLIMBING IS HARD: Chalk makes it easier. Reduce hand sweat and get a better grip with our Petzl POWER CRUNCH chalk SAKAB is a bouldering chalk bag that is placed on the ground. Its semi-rigid construction provides excellent stability, and its opening is large enough for both hands to access the chalk. The magnetic roll-top closure keeps the chalk securely inside the chalk pot. It has two handles, to facilitate transport and to hang it at hand height. It is practical, with a brush holder and two zippered pockets for separating stored items. PETZL POWER CRUNCH chunky chalk improves grip when climbing. Available in two different bag sizes to meet the climber's needs.