At Lands End we believe comfortable kids are happy kids. That s why we select breathable stretchy fabrics when designing our kids clothing. Our Kids Flannel Pajama Pants are no exception. Made from 100% polyester knit these kids pajamas are super soft and cozy. Plus polyester won t hold moisture like sweat perfect when their tossing and turning under piles of blankets in the cold winter months. Soft comfy pj pants are loose through the leg keeping them comfortable when their sleeping lounging playing and dreaming all those big exciting dreams.