basal aero filter jar for aeropress filter storage & protection basal the basal aero filter jar has been thoughtfully created to solve the problem of filter storage once and for all. it is perfectly sized to hold the aeropress filters efficiently and so that removal of a single filter is simple and quick - just turn the aero filter jar upside down and slide one out :) there is enough room for approx. 100 filters so you're certain not to run out any time soon and the lid of the jar is a convenient screw-on design. the aero filter jar fits perfectly inside the basal filter coffee traveller or can be a smart addition to your own coffee kit. there are two different styles but both are identical specifications simply with a different logo style. style a is "the life of basal" in black around the perimeter of the lid of the jar while style b is the cursive "basal" logo in blue across the top of the jar. unfortunately you cannot select which style you receive.