Double Wall Insulated Mug

wall insulated
(Wall insulation) Insulating materials within or on the walls between heated areas of the building and unheated areas or the outside. The walls may separate air-conditioned areas from areas not air-conditioned.
(Wall Insulation) Insulation is typically made of loose fill or blanket like materials (cellulose, rock wool, or fiberglass are common) placed between the wall studs to slow down air movement between a home’s interior and the outdoors.

double
Consisting of two equal, identical, or similar parts or things
Designed to be used by two people
downward and forward; "he was bent double with pain"
a base hit on which the batter stops safely at second base; "he hit a double to deep centerfield"
having more than one decidedly dissimilar aspects or qualities; "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrison
Having twice the usual size, quantity, or strength

mug
A person's face
rob at gunpoint or with the threat of violence; "I was mugged in the streets of New York last night"
the quantity that can be held in a mug
A large cup, typically cylindrical and with a handle and used without a saucer
chump: a person who is gullible and easy to take advantage of
The contents of such a cup