NWT American Eagle Waffle Thermal PJs. Size L. American Eagle Women's Waffle Long-Sleeve Relaxed Fit Onesie. Embrace winter to the fullest in this thermal onesie. The design is made of a soft waffle knit fabric blend to keep you warm during your next holiday vacation. It also features a crew neck and snap button-up front for a snug fit. Long sleeves. Relaxed fit. Snowflake and Christmas tree print in cream, tan, and green. Solid cream trim around the neckline, cuffs, and hems.