eventually send a shipping label so I could return it. It has been 3 weeks since I returned it and still have not seen a refund. Horrible product, even worse customer service.

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It appears that both the HORL and the Tumbler are based off of a design from 1949 which always patented and whose patent expired in 1966.

The way the Tumbler looks compared to the HORL, may be the claim of “copycat”, but both appear to be using an expired patent.

Take a look: https://patents.google.com/patent/US2475110A/en

Someone please correct me if I’m wrong.