Our super silky soft and eco-friendly Magnetic Modal Footie, featuring our time-saving magnetic fasteners. Modal is certified as a 100% Bio-based fabric by the US Department of Agriculture, responsibly farmed from Beechnut trees.*NB & 3M sizes open from neck to upper thigh and have mitten cuffs. *6M-24M sizes open from neck to crotch with a roomy seat for easy diaper changes. *9-12M sizes & up follow tight-fitting standards and are meant to be snug. Order one size up if your child is on the mid to high end of our size chart.