Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not impressed

A number of years ago, these things actually heated the lather. Now they only warm it up some and on top of that the life of these devices is only a few years. I also remember these costing $30 and not $100, so that's a lot of money to spend on something you need to replace every 2-3 years.I loved the hot lather to shave with after a shower, but now it's almost room temperature lather, so not impressed with the direction of this product. It's too bad too as I really like it when I first got one.