it should fit in most pant pockets, it really depends what you are wearing, if your wearing skinny jeans or something of that type its obviously not goin to fit. It fits in tracksuit pants really easily but bulges a bit in jeans, so yeah it really depends on what ur wearing.
with the one screen youl find that ur kief is kinda chunky but wit the two screens you get really really fine kief in the kief catcher and not as fine kief on the screen above so it gives you two types of kief to choose from.
damn I was thinking of ordering that one, but instead I ordered http://cgi.ebay.com/BLACK-STAGE-4-PIECE-SHARPSTONE-SPICE-GRINDER-CNC-DESIGN_W0QQitemZ290296032825QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item290296032825&_trksid=p3286.c0.m14&_trkparms=72:1240|66:2|65:12|39:1|240:1318|301:0|293:1|294:50 I thought the 5 pc's extra piece wasnt that useful, just seems like a kief catcher for the kief catcher?