... BREATHABLE COMPOSITE MATERIALS, LOW-TEMPERATURE COTTON, WOVEN LINING,FEATURES: SUPERIOR HEAT INJURY PROTECTION, WATERPROOF AND BREATHABLE, LIGHT WEIGHT, EASY TO WEAR ... OFF,A HIGH DEGREE OF OPERATIONAL FLEXIBILITY.USES:LOW-TEMPERATURE ENVIRONMENT TO WORK ... 32CM,38CM,48CM AND 68CM.FOR BOOTS, SIZE: #38~#45 ULTRA-LOW TEMPERATURE BODY PROTECTION