These pants have a soft fleece material with a built-in belly warmer. I bought them at Shimamura. Size: M-L They're fluffy and warm, but I never used them because they were too thick after I removed the tag. Please understand that they have been stored at home before purchasing. Thank you for looking. Size...M-L - Character: Kirby - Colors: Yellow, Orange I'm also selling other belly warmer pants. #Chikawa #Uniqlo #Tutuanna