Shakti Mat Acupressure Mat

Tried it a few times and then stored it in the original bag.
It's not an authentic product, but it's low-cost, so why not give it a try?

Painful!! Pleasant Stimulation: The plastic spikes stimulate the skin, improving blood flow after use, and are said to provide an effect similar to the feeling of well-being from a sauna.
Main Benefits: Deep relaxation, stress relief, improved cold sensitivity, relief of neck/shoulder/lower back stiffness, and improved sleep quality.

Although it has been used very little, it is a used item, so please refrain from purchasing if you are concerned about this.
Thank you for looking.