Fleece Safe Sleep Solution: Wearable Blanket Cozy Comfort, Kickable Blanket Seamless Transition from HALO Swaddle Easy Diaper Changes with Bottom Zipper Soft, Cozy Micro-Fleece Fabric Hip-Healthy Design, Institute-Approved Extended Length, Longer Use per Size Comfortable Neckline, Zipper Protection Premium Quality, High Reuse Rate Trusted Brand in Hospitals Nationwide Machine Washable for Easy Care Use Over Regular Sleepwear Size Range: 0 - 24 Months, Four Sizes 1.0 TOG Rating The HALO SleepSack is the pioneering wearable blanket for safe sleep, crafted to help babies enjoy better, longer sleep. As the next step following swaddles, it ensures a smooth transition with its convenient double zipper for hassle-free diaper changes and a spacious, extended sack that promotes hip health and prolongs use. Made from luxurious microfleece fabric, it provides cozy comfort that your baby will adore.