The waist area is slightly uneven due to the softness of the fabric, but the elastic is not stretched out. I bought this to try it out, but I hardly wore it because I sleep in short-sleeved T-shirts even in winter. Would anyone interested like to have it? Thank you. Gray room wear set (top and bottom) made of soft smooth material. - Color: Gray - Material: Fleece - Type: Top and bottom set - Design: Crew neck - Pants style: Straight Thank you for looking.