Our bestselling organic ribbed sets come with a long sleeve top + jogger style bottoms featuring : an elastic waist band, secured and adjustable drawstring and front pockets. Our organic cotton + spandex fabric is preshrunk to allow for the most true to size fit possible — even after laundering. 0-3M + 3-6M feature snaps at the collar. Material : 95% Organic Cotton + 5% Spandex (OEKO-TEX Standard 100) Fit : True to size. (NEW updated 2024 sizing)