The name is misleading I have a work related back injury and thought this was a apparatus for the spine when it is actually a core apparatus after it arrived I immediately watched the DVD to see how I was going to correct my spine and the secret is abdominal training core strengthening exercises. I am a beginner with little to no core strength so I haven't really got to use this correctly but, I can review the product construction: It is made from solid wood on the exterior, the interior looks to be veneered plywood and pine slats, this is covered with a polyurethane foam 100% then upholstered in a vinyl nylon fabric, to me it feels more like plastic then leather, all the handles are cast aluminum and the strap nylon. It is very solid I weigh 200+ pounds so it creaked when I sat on it. I did a couple exercises and realized I'm not ready for this but can work up to it. as for the questions that follow I don't have any friends or colleagues I'm an injured worker with a work related injury all alone.
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