... DEGREE OF OPERAT FLEXIBILITY. MATERIAL: WATERPROOF BREATHABLE COMPOSITE MATERIALS, LOW-TEMPERATURE COTTON, WOVEN LINING,FEATURES: SUPERIOR HEAT INJURY PROTECTION, WATERPROOF AND ... LONG HOURS, MORE THAN 1000 CLEAN ROOM, RESIST THE LOW-TEMPERATURE LIMIT -360C.FOR CLOTH, WE CAN SUPPLY TWO KINDS FOR SELECTION ... ,48CM AND 68CM.FOR BOOTS, SIZE: #38~#45 ULTRA-LOW TEMPERATURE BODY PROTECTION