These leggings are very soft and very comfortable. Definitely thicker than other leggings, but I would not call them fleece.
When I purchased on Amazon, I was a true medium but straight from the website it’s way too small particularly in the butt area
The light weight fleece is exactly as described. They are just a little thicker and warmer that what I would wear in warmer months so perfect for cool morning runs. I would like to try the heavier fleece for the chillier days but they have been sold out. I am a size 4-6 and the small is perfect.