With a stable design and magnetic closure that minimises accidental chalk dumps, the Mondo Chalk Pot is the ultimate bouldering accessory.  It has brush pockets that accommodate a variety of sizes, a zipped pocket for your phone and keys, and a roll top to seal everything in when you're on your way to and from your site.  The "Repo" in the colour name means it is built from re-purposed fabric scraps from Black Diamond's sewing factory.