Organic Cotton Premium Sateen Fitted Sheet- Crib Size, all Natural - Mini Sleeper Bassinet Size: 31x18 - White Upscale design, fits co sleepers. mini sleeper, bassinet in size 18x31 Organic whiite. Free from chemicals and pesticides Woven stable fabric. Very durable and stable for many years All natural packaging including the covering to preserve organic purity. Stable preshrunk fabric. Sturdy for frequent washing and stays comfortable. Certified organic cotton.