Thank you for viewing! This is a popular flannel pajama set from MUJI, made with organic cotton for warmth. Product Type: Pajamas (Top and Bottom Set) Brand: MUJI (Muji) Color: Dark Gray x White (Checkered) Size: M Features: The design eliminates seams at the sides and tags at the neck, making it very gentle on the skin. Made of flannel material (100% cotton), it keeps you warm and cozy even in the cold season. Usage Period: Used several times 3 years ago There are no noticeable stains, but it has been used for a few years, so there is some wear and tear. Please understand.