Shop › Rooster Longsleeve Onesie Image 1 of 2 Image 2 of 2 Rooster Longsleeve Onesie $26.00 sold out Made with 100% organic cotton and a sturdy snap placket. Fits most 3-6 months. Sold Out Added! Made with 100% organic cotton and a sturdy snap placket. Fits most 3-6 months.