Cooling Clothes 1.Keep cooling for long time 2.Adjustable temperature 3 ... need ice or refrigeration colloid, using air as cooling medium, Foldable and washable,military qualitySummer Air-cooled/ ... to clean,convenient to transport.3.Flexible and adjustable cooling operation, 3 Grades can be chosen, the ... need ice or refrigeration colloid, using air as cooling medium, which is the most comfortable way to ...