We'll, after rolling around on it all weekend, I'd say it gets the job done well. The casters are large enough to easily roll over concrete joints, though an extension cord will still stop you in your tracks.
Definitely comfortable enough, the curvature is adequate to cup my 215 lb fat ass. I could go for a slightly thicker pillow pad, but it is also adequate, as I momentarily considered a nap under the truck (am I the only one?).
Hard to beat for $20, and I'd say decent regardless of price.
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