Our best cold packs! deluxe cold packs are a sweat-less, paper covered poly nylon bag, that can be applied directly on the skin and don't require a compress holder. these cold packs medical supplies need no refilling, require no clumsy ties and stay at a lower consistent temperature longer than other cold packs. self-contained design reduces the risk of cross contamination and eliminate the sterilization, reprocessing and maintenance of reusable packs. 5" x 7.5".