Details M: 6 - 12 Months L: 12- 18 Months Meet the Sleep Sack, designed to help your baby have a cozy sleep. The large arm openings make it easy to slip on your babe. While the v-shape neckline keeps the fabric away from your baby's face for pure comfort. The soft breathable fabric makes it the perfect all-seasons sleeper. With two size options, your baby can continue to have a peaceful sleep as they grow. Features * 2-way zipper for easy diaper changes, can zipper from top or bottom * Wide arm opening * V neckline to keep fabric away from baby's face * Exterior soft fabric (same as our Swaddles) * Interior soft cotton lining Materials * Exterior fabric (93% rayon, 7% spandex) * Interior lining (100% cotton) * 100% Polyester filling * 1 TOG Rating * Washing Instructions: * Close all zippers & snaps * Machine wash cold with like colors * Tumble dry low Dimensions * 6-12 months: 31" long x 17" wide * 12-18 months: 34.5" long x 20" wide