trademark A thin, highly insulating fabric made from polypropylene fibers, used to make outdoor clothing and sleeping bags.
More example sentences
- For very cold temperatures, add a Thinsulate interlining for warmth.
- Another benefit of Thinsulate insulation: it's one of the lightest synthetic insulations on the market.
- By 1978, they had introduced Thinsulate to the marketplace as a synthetic substitute for down.