Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Works well

This thing is sturdy, easy to operate, and I believe it is safer than the ones that use the weighted bags. Getting into and out of it is easy, and the amount of pressure you apply is easily adjusted. One thing I would like to have is an indicator of the amount of pressure that you're applying, but I do okay without it. Delivery, though free, was extremely fast. That was a nice surprise. I definitely recommend it.