He takes a 2-gallon jug of water out of his freezer and puts it in his insulated lunch bag.
insulated from ruin, networked into success, failing upward and retiring in splendor are commonplace.
It had a wide brim and a tall crown, which created an insulated pocket of air and could also be used to carry water.
1530s, "make into an island," from Latin insulatus, from insula (see insular). Sense of "cause a person or thing to be detached from surroundings" is from 1785. Electrical/chemical sense of "block from electricity or heat" is from 1742. Related: Insulated; insulating.