Móri is a towel cloak with mittens and a hood, used to surround oneself when out of a hot spring or the bathtub. The cloak can also be used for cloth changing for example when your are next to a hot spring and there is no changing room. You put the mittens over the opposite shoulder and make the cloak cover you while you change.
Móri is a common Icelandic ghost name and means dim, earthy color. In the mist from the hot water you will look like an ancient ghost.