Description 1 Electric winter trousers connect to the power bank USB port to heat the trouser and keep warm 2 Adjustable temperature low middle high for adjustment 3 Washable you can wash and clean the coat after unplugging 4 Looks exquisite unisex soft warm and comfortable 5 Silicone waterproof button 6 No power bank inside it heats under power bank USB or battery connecting so please keep charging while wearing SpecificationName Electric TrousersMaterial Cotton DecronColor BlackSize L XL XXL 3XL 4XLAdjustable Temperature YesWashable Yes How To Use 1 Take out USB plug 2 Plug in removable power bank NOT INCLUDED 3 Turn on the removable power bank NOT INCLUDED 4 Press the chest temperature control switch for 5 second 5 The light flashing means heating 6 Manual adjustment 7 Press the chest temperature control switch lights out and stop heating unplug the power source Washing Instruction 1 Take out removable power bank NOT INCLUDED 2 Neutral detergent is available and then hand wash 3 Do not force knead or beat 4 After nature air drying can be use Note 1 Please allow a little error due to manual measurement 2 Please measure and cheack the size to make sure the item will fit you before paying 3 If your size falls in between sizes we suggest you choose the larger one for more coverage 4 Trousers ONLY Power bank is not included 5 Only heats under power bank connecting Package Included 1 X Electric Heated Trousers