Moisture Wicking Patented moisture-wicking threads are interwoven into the fabric to help reduce the risk of overheating The Perfect Fit Custom closure plus three sizes allow fit to be individualized to meet the need and size of each little one - even as they grow Easy Diaper Changes Double zipper allows for easy access diaper changes Maintain Sleep Foundation The Alphie® was designed to extend the sleep cue created with your Ollie® swaddle