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 Long Sleeve Top and Bottom Snug Fit Pajama Set is no exception. Made from 100% cotton knit these kids pajamas are breathable ideal for sensitive skin. Plus cotton offers cooling comfort on hot and sweaty nights in summer and when tossing and turning under piles of blankets in the cold winter months.