Bambini Baby Rib Knit White 100% Cotton Long Sleeve Onesie (M - 3 Pack). Long sleeve bodysuit Onezie can be worn alone or under other clothes for layering. Made from 100% Cotton; stays soft wash after wash.Care Instructions: Machine wash cold. Do not bleach. Tumble dry low. While we aim to supply accurate product information, it is sourced by manufacturers, suppliers and marketplace sellers, and has not been provided by Overstock.