well, scratch that, its a 1 piece. you should be good to go:edit: also if it is the type that roll together you might have a little more ajustability in a longer length, try to get the max# of rolls for dryness, but not too many that it is bulky.
" most people order two sizes and return the one that fit the least."
No Bob, "most people" do not do this. Take the time to do the research and find the right size regardless of what you're ordering. This is just plain lazy.