The Ollie Swaddle was designed as a flexible 2-way swaddle to safely transition baby to the next phase of development. When your little one is able to roll over from back to stomach, you can transition to one or both arms out with your Ollie. Our design gives baby the freedom to move and gradually adjust to sleeping unswaddled, while continuing to promote self-soothing. Size: 0-9 Months. Color: Blue. Gender: unisex. Age Group: infant. Pattern: Solid. Material: Polyester.