I have three starter kits now and the 510 will fit in a super e-cig case from smoke stick taken apart..the cool thing about that case is with the super e-cigs they fit diagnally so one is ready to go no assembly.Fits in your pocket.I also have a Blu kit with the PCC and it lasts all day at work and is same size as a cig pack,but alittle heavier.Carry it wherever you want.Its got 4 refills one atty and spare battery and charges up to 6 batteries before it needs charging..People have really not reviewed the blu kit very highly but i like it alot when i refilled my own better vapor flavor etc...But I keep two kits near by at all times..I need to order another case like i have for my 510 stuff, I just use it at home now...