I got these for my husband. We got size medium and they fit him perfectly. They are not too tight or too loose. These are somewhat thin but would be a good base layer for extra warmth and insulation when working or playing in cold temperatures.
They have that waffle type design and they are good quality with no issues. He can wear these around the house or slip a pair of jeans on over top of them. He works in a cold shop or has to go into a shop for work and there is no central heating. So he always wears something like this under his jeans.
These will also be good for when going out and doing recreational activities in the fall and winter.
We did wash them because when he first put them on they were stiff and a little itchy. Fabric softener helped make it feel more soft and comfortable.
They have a comfy, stretchy waist band and good size cuffs on the bottom so the legs and a front area for easy access to go to the bathroom for guys.
Definitely recommend as fall and winter is coming along with the colder weather.
I did get to try this for free through the Spark review program but the opinions here are my own.