I have been living in this onesie every night. It's so cozy! It's not too thick, either. I'm wearing the kids XXL. My size was gone, so I got creative 🙃 I'm a size xs/s 5'4" about 110lbs with a 31-32 inseam for reference. I grabbed one for the whole family. *Side note: The picture below is wrong but takes you to the exact product LTKSeasonal LTKHoliday LTKfamily