Mug warmer made by hand knitting and felting. And suitable for keeping cold drinks cold for a longer period of time. It's made entirely of wool.
The glasses can be washed in the machine and microwaved.
The mug heaters can be hand-washed, but they must be placed on the glasses when wet and allowed to dry on the glass. If you have hand washing software, they may be machine washed at a maximum of 30 degrees; otherwise, they can tangle together and become too small.
3.5 dl capacity.