The coziest jammies ever! Our two-piece pajama set is made from the same extra-soft Bamboo Viscose as our Zipper Pajamas. They don't have any irritating tags and are super stretchy to allow for longer wear than your standard pajamas, so you can be sure to get maximum use from our Long Sleeve Pajamas. Perfect for toddlers and kids of all ages! * 95% Viscose from Bamboo, 5% Spandex, 220-230 GSM * Elastic waistband * Long-sleeve shirt and pants * Runs true-to-size * Tight-fitting to comply with CPSC regulations We recommend your current size or sizing down from cotton clothing sizing. Model is wearing size 4T and is 49 inches, 35 pounds.