The Heller Heated Vest keeps you toasty and warm without sacrificing fashion. It works a bit like an electric blanket except the secret is it's charged with a slimline rechargeable lithium battery to provide heat via heat pads on the upper and lower back and front The vest itself is a snug, quality design which doesn't look bulky...And by the way, we're an Australian based, family owned & operated online business who can be contacted via phone if you need us.