All BB pajamas are made out of Bamboo viscose with a touch of spandex to allow stretch. Bamboo is soft and breathable so naturally perfect for baby skin. All BB Long Sleeve Pajamas include the following: Wide ankle area Elastic waist band Runs true to size (should fit snug) 95% Bamboo Viscose, 5% Spandex 7Y-12Y have solid trim on neckline, wrist, ankles, and waist.
