These fan-fave long sleeve pajamas are breathable, stretchy, and buttery soft thanks to our signature Päpook® viscose from bamboo. These jammies don't trap heat and are excellent for children who may overheat at night. Available in all the cutest designs you love, they can be mixed and matched with your other favorite Posh Peanut® apparel!All of our 2-piece pajama sets comply with snug fitting standards for apparel not treated with any chemicals. Pajamas should be worn tight-fitting.