I have down to these 3:
http://www.inov-8.com/Products-Detai...6&P=5050973012
http://www.camelbak.com/sports-recre...-flashflo.aspx
http://www.mizuno.eu/gb-eng/detail/f...uno-endurabelt
Which one would you recommend? Do you know of any other similar waist packs?