Dress your little one in style with our adorable Grinch My Day Onesie! This Grinch-inspired Christmas Onesie is made from soft white organic cotton, perfect for keeping your baby comfortable all day long. Available in both long sleeve and short sleeve options, it's a must-have for the holiday season 🎄✨ Available in sizes ranging from newborn to 24 months. These white 100% organic cotton Onesies will be either Gerber or Carters brand, depending on the size you choose. Size Chart: Short Sleeve Sizing: Newborn - 17-21 in./ 5-8 Lbs. 0–3 Months (For Carters - 3 Months) - 21-24 in. / 6-12 Lbs. 3–6 Months - (For Carters - 6 Months) - 24-26 in. / 12-16 Lbs. 6–9 Months (For Carters - 9 Months)- 26-28 in. / 16-20 Lbs. 12 Months - 28-30 in. / 20-24 Lbs. 18 Months - 30-32 in. / 24-28 Lbs. 24 Months - 32-34 in. / 28-32 Lbs. Long Sleeve Sizing- Newborn - Up to 21.5 in. / 6-9 Lbs. 3 Months (Gerber 0–3 Months) / 21.5-24 in. / 9-12.5 Lbs. 6 Months - (Gerber 3–6 Mos) / 24-26.5 in. / 12.5-15.5 Lbs. 9 Months - (Gerber 6-9 Mos) 26.5-28.5 In. / 15.5-21 Lbs. 12 Months - 28.5-30.5 in. / 21-25 Lbs. 18 Months - 30.5-32.5 in. / 25-28 Lbs. 24 Months - 32.5-34 in. / 28-30 Lbs.