Warm and fun! These pajamas for adults are a pattern of yellow smiley faces. 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.