Even though both Brian & I are big fans of Revelate bags , the bicycle shop were I work sells a number of bags from various makers , today I had a chance to take a close look at one of the newer bag makers who offer a full selection of bags , UK based Epidura . Most of the top riders in the recent Race across America seemed to be using this brand . The bag that I have in store is their large seat pack which at 17.5 ltrs is a monster compared to my 14 ltr Viscacha from Revelate Designs , the buckle system is slightly different but the straps hold onto the bike in the same manner as most bags . The seat post straps are very long and offer plenty of adjustment with a non slip fabric which grips the seat post. There is a hard plastic base supporter that is fully removable for cleaning and a nice bungy tie down on the top for extra gear. It's a little bit cheaper than Revelate , but this bag is not manufactured in the UK so that would be the reason for the price difference, overall a great looking seat pack for a good price.