I took the advice of other reviewers and got the XS rather than my size S. They are comfortably snug and perfect for lounging and sleep. The fabric is thick fleece. The pockets are a bit loose and waist a little tight but otherwise perfect. I probably could have been fine with the small and trying to decide on which size to choose for the hoodie since I am going back for it.

I bought these pants and its matching sweatshirt in two sizes. The size S in Charcoal is super comfortable for home-wear. It's a bit frumpy around the ankles because I'm short, but I don't mind it since I wear them mostly at home and walks around the neighborhood. I also got the Dark Taupe in XS to wear out (park, grocery runs). The waist fits comfortably even when I'm bloated and it's not as slouchy/baggy as the S size. The fabric is really soft and I find the Dark Taupe stayed pretty fleece-y even after washing, but the Charcoal feels like it got a little thinner, which worked out in my case since I wanted to use it for summer nights. I'm using the Dark Taupe now since fall weather is setting in and it's perfect for a walk in 14-16C temps. I'm 4ft 11in and 105lbs.

Love love LOVE these pants! Softest fabric EVER!!!!

I own three of these pants and they are so comfy and soft even after washes

These pants feel amazing, buttery soft. I could live in them if there were more colors to buy. I have a few other pair of the ultrasoft collection but this collection is my favorite. I love even the detail on the drawstring of the metal ends on the fabric. Wish there was a navy color.