Has small holes in the top designed to let moisture out, but these can also let waterĀ in!
There is sufficient warning on the instruction sheet telling you not to soak, but (if you're like me) you might missĀ thatā¦
Still works well and is perfect for fudge and toffee (has soft ball, hard ball, soft crack and hard crack marked on the thermometer)Ā ā amongĀ others