Seersucker or railroad stripe as it is sometimes referred to as is the perfect lightweight fabric dating back to the British colonial period. This Classic Short Set is accented with soft blue stripes, white piping and finished with pearl buttons. The exquisite cotton is lighter weight than flannel, making them soft yet breathable. 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!