Petzl Saka Chalk Bag. Crush it with the Saka Chalk Bag. The ergonomic shape and reinforced rim of this soft bag allows easy access to the chalk without causing discomfort when wearing a pack or when your back is against a rock wall. The closure system is efficient, thanks to the cordlock. It can be opened with only one hand should you forget to open it before you start climbing. The Micro fleece interior liner resists matting and ensures good transfer of chalk to the hand while the soft liner flap prevents accidentally losing chalk. This bag comes with an adjustable waistbelt. elastic brush holder brush not included, and double loops for stability and easy attachment to a belt or carabiner.