This chalk bag does the job. Best of both worlds, when a bouldering bucket is too large and a standard chalk bag is too small for your hands. Use it for long pitches or any boulder session, it holds tons of chalk. The only down side I found is that the Arc'teryx logo is an iron on laminate, not stitching (embroidery) which I though was really lame (especially for the price),It will probably rub off after a while. Either way this is a stellar bag
I have been using this pack for about 6 months now, and it works. It only bounces around if the pack is loose, and thats the deal with any pack, if its a hand bottle, waist pack, or a pack on your back. If it bounces, tighten the straps.. Done. Since I use this for my long runs on trails and eoad running, I would have liked it if it were a 100oz pack, and had a bit more space for food. Overall I would recommend this pack. Side pockets are great for holding gels, bars, and electrolyte tabs...