The 10 Best Sleep Sacks You Can Find on Amazon

Halo 100% Cotton Sleepsack Swaddle and 3-Way Adjustable Wearable Blanket ($50)

This buzzy brand, which is used in many hospitals, offers a gift set that includes a swaddle and a sleep sack. Having both on hand makes it easy for new parents to transition their baby from one to the next once the little one starts rolling.

"[This gift set] literally makes life so much easier both for my husband and I and our baby," one parent raved. "[I] originally bought the . . . bundle just to see what's up, but had to come back and buy another."