I worked in the hospital and we used something similiar to help patients circulation. I started having issues with my calf and the doctor recommended compression stockings, but these are perfect for the couch and bed

fine

Temporary calf issues after scar removal on hip drove my purchase, & I paid the few extra bucks for next-day delivery, well worth it in this case. I had cramping, heaviness, & clear circulation issues.

Pros: really well done on the massaging action, great movement of pressure location, immediate fast help for my issues. Simple product. The 3 options for air pressure works like a champ. The two choices of massage action programming helped, one only worked so-so for me, then trying the other led to really effective massage action. And VERY reasonable on the price, since it's not rechargeable battery powered.

Cons: wish the cuffs & massage areas were another inch longer, & I'm a medium to small guy. Wish the air hoses were 1 foot longer. Would have liked the controller to have a hook or velcro patch or something, so I could not just rest it on the floor - I'm sure I can rig up something with the right stick-on velcro hook.
This is an effective & economical unit that did the trick. Now that I'm recovered from the scar removal, it's going into the RV for use after future long hikes on the mountain trails.

2 year update: Still good! Read on!

I'm an inline skater, often participating in multi-week 12-14 mile city skates - hills and bridges. After years of using standard calf compressers, I wanted something more. These are WELL WORTH THE PRICE.

If you are at the point your calves can use a real massage to squeeze out the lactic acids. THESE ARE HEAVEN!

These produce amazing recovery! They can apply a painful squeeze. Masochist would love these. If you want less pressure, just loosen them manually by backing off in how tight you pull the Velcro wrap.

They have rolling pressure that applies and releases for just the right amount of time. I'd say 5 seconds. They seem to have at least three sectors running vertical which fill with compressed air. If you want steady pressure, that is a second option.

They are lined with soft velor. You can pull them tighter or leave them loose with Velcro across it's metal hinge.

The electric cord is about 8' long making it easily reach a bed or couch from an outlet. While walking around in them is ill-advised, you can maneuver a small local area if your careful in holding the air connectors and control switch.

I'm 6" with average calf size. The leg wraps seem very large and should adjust for extra large calves.

The air connecters from the control switch air a perfect length. The also are labeled LEFT and RIGHT as are the billowed compression wraps. Everything about these says solid construction..

They shut off automatically after 20 minutes. No need to set a timer.

You can't plug just one into to control switch/compressor, but that's solved by just wearing one. So single leg application isn't minimized but it's really not a hassle.

Warning. The billow connectors are rubber. My Bengal loves to bite new things and wires. If you have a cat, they can puncture these cords with a single bite. Cover them with a towel or spray them with apple bitter if your pet isn't a good listener.

I am very impressed with the quality of these compression pumps. Very good quality!