A cooling pack comprises at least one coolant carrier (10) for keeping coolant held thereon and a container (11) adapted to enclose the coolant carrier (10). The coolant carrier (10) consists of liquid absorbent substrate (12) and liquid absorbent polymer particles (13). The container (11) has at least...http://www.google.com.au/patents/US5031418?utm_source=gb-gplus-sharePatent US5031418 - Cooling pack
