The super silky soft Magnetic Modal Coverall gets baby dressed faster than Clark Kent turns into Superman! No longer dread night changings simply open outfit, insert baby and the outfit practically dresses itself! Modal is certified as a 100% Biobased fabric by the US Department of Agriculture, responsibly farmed from Beechnut trees. *NB & 0-3M sizes open from neck to upper thigh and have mitten cuffs. *3-6M sizes & up 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.