Rich, I usually wear knee high compression. I also wear mid-thigh to waist compression from Spanx. I get the strongest compression they have, but it isn't graded like the medical compression. I would guess it to be about 30mmHg. I used to wear thigh high compression, but am no longer able to do so. I have also tried waist high compression in the past, but it it caused stomach pain. I need 40mmHg on my legs, but only 30 or so on my stomach. I find that with compression I am generally able to be upright for about twice as long as without compression. So instead of being able to stand semi-comfortably for one minute, I can safely push it to two minutes with compression on. Instead of only being able to sit in my recliner for an hour, I can sit for closer to 2 hours with compression.