Most new parents know the benefits of swaddling babies and how the technique can lead to a better night's sleep. Infants feel more secure when wrapped tightly, and a proper swaddle will mimic the feeling of being in the womb. In addition to swaddling baby in a muslin blanket, many mamas rely on products specially designed for ensuring a better night's sleep. Here, we share some of the best sleep sacks and swaddle "helpers" on the market today. Sweet dreams!