Old Navy Thermal Red Buffalo Plaid Onesie PJ Pajamas SIZE S NWT BUFFALO PLAID RED BLACK Old Navy Thermal Knit Onesie 1 piece Union suit pajamas, women’s sz Medium. New with tags. Super soft blend of cotton/poly/elastane in a fun rainbow colored winter fair isle/Norwegian print. Front buttons go down to the lower waist. Long sleeves and full length legs. Chest: 21” underarm to underarm Sleeves: 26” Waist: 40” Hips: 50” Inseam: 29” Measurements are approximate and were taken with the fabric unstretched