It is an old model or a product that we can no longer order at the manufacturer.
The Heat Vest 1.0 guarantees a warm back with just one click: by pressing a button, the heating element is activated thanks to the lithium packs located under the chest ribs.
Perfect for endless freezing days, the rechargeable rcB 1800 lithium packs provide up to 11 hours of pleasant and welcome warmth. And this warmth is controlled either directly on the lithium blocks or via the free phone app.
Featuring a slim fit to ensure direct heat transfer, this vest is to be worn as a base layer. Abrasion-resistant, it is also made of quick-drying material. And in the summer, there's no need to leave it in the closet. It can then be worn without the lithium packs.