Sleep Sacks

When swaddling ends, sleep sacks take over. TOG, sizing, and the sacks worth buying.

The best sleep sacks for babiesSee the full comparison

Best Sleep Sack for Newborns, Tested Through Real Nights

We tested the best sleep sacks for newborns through real nights: fit, TOG options, fabric, and zippers. Which one to buy when swaddling ends.

More guides on this topic

What TOG Sleep Sack for My Baby? A Room-Temp GuideWhat TOG sleep sack your baby needs, by room temperature: a plain TOG chart, how to dress underneath, and how to tell if your baby is too warm.

Sleep Sacks: frequently asked questions

How do I pick the right TOG?: Roughly: 0.5 TOG for a warm room above 24C, 1.0 TOG for a typical 20 to 24C room, and 2.5 TOG for a cold room below 20C.
Sleep sack or blanket?: Sleep sack for the first year. Loose blankets are not recommended in the crib for babies under twelve months.

More in Newborn Sleep

SwaddlesA snug wrap helps a newborn sleep longer. How to do it, and which blankets hold up.Bassinets and CribsBassinets, bedside sleepers, and the convertible cribs that go from newborn to toddler.Baby MonitorsVideo, audio, breathing, and wearable monitors. Signal versus screen-time for anxiety.Sleep EnvironmentBlackout shades, white noise, room temperature, and the eight-dollar fix that helps the most.