SAFE AND SECURE SLEEP SOLUTION: The Original Halo Sleepsack Swaddle replaces loose blankets in the crib, creating a safer sleep environment. Endorsed by hospitals nationwide to promote safe and restful sleep for your baby. SOFT AND STRETCHY COTTON: Made from 100% cotton with a double-knit construction, offering a cozy and slightly stretchy feel perfect for swaddling. TOG Rating 1.5 (room temperature of 68°-72°F): Suitable for cooler evenings during spring or fall. 3-WAY ADJUSTABLE SWADDLE DESIGN: Generously sized fasteners allow a perfect, customizable fit. Adjust the swaddle for Arms-In to reduce startle reflex, One-Arm-Out hand to face for self-soothing, or Two-Arms-Out to transition to the Halo SleepSack, an easy transition when it’s time to stop swaddling. CONVENIENT DIAPER ACCESS: An inverted zipper opens from the bottom, allowing easy diaper changes without disturbing your baby’s swaddle. Sleeveless design minimizes overheating risk, while snug arm and neck openings ensure a secure fit. Size 3-6 months; 23-26 inches; 13-18 lb. Pattern is Harry Potter Enchanted. Smoke-free home. Brand new.