If you find yourself having to travel without your teaware (eek) then you have a choice of Grandpa Style brewing (leaving your leaves in the water as you drink) or throwing a few of these teabags into your luggage.
The bags come in two sizes for solo vs group brewing. They are made from chlroine free, unbleached paper for a pure brew and while they will never replace teaware, they brew up a good infusion for when you are on the road and need a decent tea.