RioRand Men Heated Jacket Power Bank Charger Portable USB Cord Port Advanced Element & Technology -- Compared to carbon fiber heating elements, the super composite heating filament is more durable and indeformable. Dont worry about washing, just put it into your washing machine Lightweight Power Bank-- No charger included. Without battery replacement, it is portable to work outside. The 5V power bank can be used for both heating apparel and charging personal electronics Adjustable Temperature -- 5 minutes fast Pre-heating and 3 LED buttons to control the jacket temperature according to different weather conditions. The warm temperature can last 9 hours at maximum Warm Whole Body Over-- Heating elements generate and trap heat across body areas (left chest, right chest and mid-back). To be comfortable for cold-weather sports and activities About Size Chart-- Please check the 7th image for RioRand size chart, rather than Amazon reference size chart. Read the instruction carefully before using the heated jacket