Here's what other sites are saying:
The classic round shape of Petzl's Bandi, along with a reinforced large opening allows for easy access. Its soft fabrics won't cause discomfort when wearing a pack or when your back is against a rock wall. The chalkbag can be opened with only one hand should you forget to open it before you started climbing. There's an emergency whistle integrated into the closure system's cordlock (patented) just in case you need to call for help.
The Petzl Bandi Chalk Bag has a classic round shape with a large opening to accommodate your entire hand.
Petzl Bandi Chalk Bag FEATURES of the Petzl Bandi Chalk Bag The rigid rim maintains the shape of the bag The woven fabric used to close the bag does not absorb chalk and keeps it from being lost when closed for transportation Rigid textile toothbrush holder with two retainers for better hold of all types of brushes Liner sewn into bottom of bag to avoid flipping it when pulling hand out of the chalkbag
The Petzl BANDI chalk Bag has a classic round shape with a large opening to accommodate the entire hand. The soft fabric won't cause discomfort when wearing a pack or when your back is against a rock wall. Practical closure system with drawstring and cordlock. It can be opened with only one hand should you forget to open it before you start climbing.
- Mountain Gear