PETZL - SAKA, Ergonomic Chalk Bag for Climbers WIDE OPEN: With the SAKA's ergonomic shape and rigid rim, it's easy to get your hands in there. COMFORTABLE: The soft fabric won't cause discomfort when wearing a pack or when you're pressed against a rock. ONE-HANDED OPEN: The drawstring and cordlock closing system allow you to open the bag with one hand when you're climbing. FOR ALL BRUSHES: The rigid brush holder on the side has two retainers to better hold all types of brushes. CHALK IT UP: The inner liner is sewn to the bottom so it doesn't flip out when you pull your hands out.