Perfect for the patriot in you! Warm and fun! These pajamas for adults are inspired by Old Glory, herself. These one piece zipper-closure footies have gripper bottoms and slightly elasticized ankles. Small fits up to 5'5". Medium fits up to 5'8". Large fits up to 5'11". XL fits up to 6'3". Sizing based on average weight. Size up for a roomier fit, size down for a tighter fit.