I love the way these pants fit! I'm a long human and high-waisted pants suit my figure best. I am always hoping for a waist band that hugs my waist in a form-fitting manner that does not make me feel like I'm wearing a corset. I might be a little sensitive to pressure on my abdomen since I can't recall another person ever mentioning the same experience, but I usually have to stretch the waistband of my pants 3-4 times throughout the day to 'give myself a second to breathe,' and with these I do not!
These pants were tighter-fitting in the crotch on up to the waist band than I originally imagined after looking at the photos. I do not mind my sweats being more form-fitting and still find them comfortable but its worth noting (and perhaps sizing up) if you like more room for your booty and hips. They are a little shorter in the leg so I didn't have to keep scooting them back up my legs during the day after walking around.
The material is very breathable, I wore the set out when the weather was in the low 70s and I did not overheat. Since I discovered them, I have only purchased sweat sets from Mayfair and I never regret it.