"T-sleeve is a brand new, complementary product for tea drinkers who use tea bags. T-sleeve™ was created from a vision to enjoy a mess-free, tea drinking experience. "
It seems to be a water resistance disposable travel pouch for teabags.
Handy, if you drink teabags with string. As I use t-sacs I think I will stick to my Thistledown Cozies cloth tea travel wallet.