Children's Green Gingham Flannel Pajama Set from Petite Plume. Size 8. Gently used. This flannel has unmatched softness and is perfect for year-round comfort. This classic pajama set is accented with white piping and finished with logo buttons. Petite Plume debuted the first-ever chemical-free, flame-retardant fabric for children's sleepwear. Fine yarn-dyed cotton is blended with a touch of inherently flame-retardant fiber to pass strict CPSC safety laws without relying on harmful additives. It's brushed for snuggly softness and becomes more cozier with every wash.