I've been using the packable "I've been using the packable duffle for trail running trips to Aviemore, Glencoe, the Lakes, Snowdonia, Peak District and weekends away. It can take a huge volume, keeps everything secure, packs to nothing, moulds around what ever it put in it and takes up no space when not in use. Love it in the backpack strap configuration." — James M. (5/5)