Find Bodysuits at Target.com! Make sure you have all the necessities Baby will need. The Gerber Newborn 3-Pack Long-Sleeve Onesies in white are a must-have for all newborns. Made of soft cotton, these long-sleeve onesies are cozy and comfortable, and have a front snap for easy on, off and diaper changes. Machine washable. For newborns to 12 months. Size: 0-3 M. Color: White. Gender: Unisex. Age Group: Newborn. Material: Cotton.