Instruct: Classify a given Amazon review as either positive or negative.
Query: Stamina Inversion Table

The Stamina Inversion table arrived within a week of ordering. It took 15 minutes to assemble without any problems. The frame is well built and within 20 minutes I was hanging from my feet and hearing the first pop in my back. Comparing this machine to other 'under $200 tables', it is a very good value.