Abstract: A frozen open-celled material is prepared by saturating the material with a solution of 30 to 60 grams of salt to one liter of water. Preferably from 40 to 50 grams of salt to one liter of water. The saturated material, preferably open-celled polyurethane foam, is then frozen. Deterioration of the foam which occurs when plain water is used is essentially eliminated.

Abstract: A cooling wrap is designed for tying around the neck of a person while performing vigorous activity in hot weather. A closable bag for containing a frozen water medium is stitched in a pouch formed in a strip of water pervious fabric. The strip of fabric is further stitched to form tying straps on both ends of the pouch. A pad of open-pored foam is secured in the bag to insulate the neck from severe cold while still permitting the controlled dispensing of water to the neck. The frozen water medium may be ice, but is preferably open-pored foam which has been saturated with water and frozen.