Warm Underwear for the Entire Legs
Puzzle 4 of All Things Ice Cream Easy Pack
Question is: Warm Underwear for the Entire Legs
and the answer is: LONGJOHNS
Word Meaning:
LONG JOHNS — (US) A full-length undergarment, worn on the bottom half of the body, or two-piece, to keep the wearer warm in cold weather.
Definitions from Wiktionary.