Suitable for babies up to three months Made and filled with organic cotton to ensure maximum softness and breathability Bell-shaped bottom provides extra room for natural leg movement Two-in-one transitional system with arm poppers allows for a smooth shift from swaddling to arms-free sleeping Two-way zip enables easy access and adjustments while protecting your baby's delicate skin TOG rating of 2.5 provides optimal warmth to your baby without any additional blankets in room temperatures ranging from 63 degrees Fahrenheit to 73 degrees Fahrenheit