Thicker, higher quality fabric than other brands that is shaped to fit the human body. No loose-fitting sacks! Vibrantly colored prints similar to those found on real baby onesies have been enlarged to provide the same level of cuteness to adults. 95% Organic Cotton 5% Spandex fabric is soft on skin and stretches to fit many body types. Thickness of fabric is suited for supporting the weight and bulk of a diaper, including cloth diapers. Onesie has a row of 3 crotch snaps for easy dressing and a secure fit.