50% Cotton Twill / 50% Modacrylic Seersucker or railroad stripe as it is sometimes referred to as is the perfect lightweight fabric dating back to the British colonial period. Our Summer Romper is made of the softest brushed fabric which will allow your little one to walk, crawl, or relax in comfort. The sweetly piped back pocket is perfect for monogramming. The sleepwear is made from the finest quality yarn-dyed cotton and blended with just enough inherently flame retardant fiber to allow it to pass strict CPSC flame retardant laws without using harmful chemicals. The fabric is brushed for added softness, making the sleepwear feel absolutely luxurious, getting cozier after each wash. In our luxurious sleepwear, your little one will be tucked in love and off to dreamland. Bonne nuit. Pre-Shrunk Snap Closure Sibling Matching 50% cotton, 50% modacrylic Machine wash delicate cold with like colors; lay flat to dry or machine dry on low heat This product cannot be purchased with Apple Pay, PayPal or Janie and Jack Gift Cards.