Little Sleepies Kids Two Piece Pajama Set in Sienna's Unicorns Print. Comfy for them, easy for you. The best sleepwear (or all day wear) around for your little ones. Made from the softest, stretchiest bamboo viscose fabric that feels like butter. It is gentle on sensitive skin and perfect for year-round wear. There are no snaps, buttons, or interior tags. These pajamas are made with extra length, and can easily be rolled up (arms or legs!) as needed. For this reason, sizing is very flexible!