Lightweight and versatile, can be worn alone or layered for extra warmth Choice of heat levels controlled by LED button or Bluetooth application Inner lining features technical silver heat-reflective material Shell fabric incorporates TPU membrane, making it wind-proof, water-proof, breathable, and washable Powered by a lightweight, portable 10000 mAh lithium-ion power bank Includes chin guard, storm placket, and reliable YKK zippers 3M Scotchlife reflective piping for added visibility in low-light conditions Provides up to 7 hours of warmth with auto shut-off feature