A 1oz (28g) is like a regular standard size bag you would get in a multipack etc,
2.75oz (70g+) bags are like King Size Big bags (eg Monster Munch Flamin hot out of a newsagent etc)
The 200g+ size bags are large sharer size bags - but these are too good to share we say! Enjoy& Favourite Crisp flavours now in Mac N Cheese form! Great together!