It did come in the mail today. One thing they can improve is have the foot grip Velcro. It would be more snug.
It is as it is advertised. For your legs, you can do sitting, lying. For your arms, you can do it on a table. It is useless for me if the resistance is friction. It has to be weight bearing.
To see what it can do well, I have to look at the bigger picture, comparing to other methods.
Obviously, you can stand on it and place your hands on the wall for balance and pedal. 1) I don't know about the weight. I don't think it can withstand the full bodyweight for the long haul. 2) The form is bad. Walking up and down the stairs is better.
Legs, lying, lift you butt off the ground in a bridge position, pedaling. Working reverse gravity, working the glute and hamstrings. Much better. This is this mechanism's forte. The device is too short. You have to put up against the wall at a 45° to clear the leg.
Kneeling push up position. Hands. Works great. This device is better for hands than feet. That's in front of you. Put it on your side, side plank, left and right. Works great. Put it behind you, dip position, sitting. A dip position behind you is very bad mechanically, you don't even need to lift your butt off the ground for adequate resistance. That's 4 on the ground, 8 if you count backwards and forwards.
Hang it up on a TRX (or clones) off of a 2 joint door pull up bar. Pushing (redundant with ground push up). Pulling. Now we are talking. This is the only pulling weighted mechanism (besides something out of Rocky 4 which costs thousands of dollars (Cybex UBE Upper Body Ergometer, $4,000 USD)).
Sitting, hang it above your head on a TRX. You don't need all that much weight for pulling. You have yourself an American Gladiator hand bike.
This complement the 12 ways walking the stairs very well. Mostly arms.
This is a good piece of the pie of cardio, which will be my next post.