Very gently warn, washed, and hung to dry. From website: Cut from our silky smooth bamboo rayon, these soft and snuggly footies come in a rainbow of modern, earthy colors. The stretchy material gives you the option of a snug or looser fit, while keeping baby comfortable and stylish. 97% Bamboo Rayon, 3% Spandex Dual zipper Breathable material Sole grips for 6-12 months and up Fold over cuffs to prevent scratching on sizes preemie, newborn, and 0-3 month