This two-way-zip swaddle sack made from an organic cotton blend keeps your little one snug and securely swaddled without the need for complicated wrapping. The 1.0 TOG rating makes it an ideal moderate-weather swaddle, so no need for blankets in the bassinet or crib. The bell-shaped design promotes proper joint development in the hips and shoulders. Snaps at the arms allow you to transition baby from arms-in sleep to arms-out sleep once they show signs of rolling. Includes room thermometer and what to wear guide to help bundle baby appropriately for sleep Material is firm enough to restrict startle reflex while still allowing stretch and movement for growth. The stretch allows for full chest expansion when breathing and for the baby to move hands into a self settling position inside the swaddle. Two-way front-zip closure Feeding-friendly Snaps at arms 1.0 TOG Suited for room temperatures between 70-75°F 55% organic cotton, 40% viscose, 5% elastane Machine wash, tumble dry Imported Organic Content Standard (OCS)-certified. OCS uses third-party verification to confirm the amount of organically grown material in a final product