Wskderliner Back Stretcher, Lumbar Back Pain Relief Device with 3 Adjustable Settings Lumbar Support Stretcher with Magnetic Posture Corrector Back Support for Office Bed Chair (Black)
Used it only 2 times so far, it is easy to put together and seems pretty sturdy, I did get a lot a back pain when used it first time, but it went away pretty fast, will keep using it and hopefully it will help