Modal 95% Spandex 5%, 30 thread rib knit pajamas, Luxurious modal fabric is stretchy, silky, lightweight, soft, and comfy Super wide stretchable waist band for comfortable and painless wear. Tagless neck label helps protect sensitive skin. The airy yet strong cotton and Modal cellulose materials is ideal for relaxing evenings Cotton sleep set always fit snug for your child's safety as loose fitting garment is more likely to catch on fire