NWT Savage x Fenty ‘Tis The Savage Open Back Onesie. Our ’Tis the Savage Open-Back Onesie features a button-down front with a back flap closure. Size M Long sleeve onesie Button-down front placket Crewneck Back flap with button closure 63% Polyester, 34% Rayon, 3% Elastane Machine wash cold with like color, tumble dry low Do not use fabric softeners, bleach, iron, or dry clean B185