The Halo Sleep Sack in size Large is designed for babies between 12-18 months old and weighing 22-28 pounds. This wearable blanket is made from soft cotton material and features a multicolor design, suitable for boys. It is specifically designed to be worn in a crib, providing a safe and comfortable sleeping environment for your little one. The brand Halo is known for its high-quality and innovative baby products, making this sleep sack a reliable choice for your child's nursery bedding needs.