Heating Patches for Clothes
Now this product has potential: heating patches for clothes. They're supposed to be lightweight, flexible, and efficient.
For me, the usability comes down to comfort: if it feels like soft fabric I can use it, but not if it's scratchy or stiff. If soft, it would represent a big improvement over adding yet! another! layer! or stuffing a hot sock down my sweater. There are all kinds of products to trap heat or put heat in, but most of them are clunky. A truly lightweight one would be awesome, and I would pay extra for it if it was in my budget.
For me, the usability comes down to comfort: if it feels like soft fabric I can use it, but not if it's scratchy or stiff. If soft, it would represent a big improvement over adding yet! another! layer! or stuffing a hot sock down my sweater. There are all kinds of products to trap heat or put heat in, but most of them are clunky. A truly lightweight one would be awesome, and I would pay extra for it if it was in my budget.