10 baby sleep sacks that keep little ones safe and cozy

For a one stop shop that takes out all the guesswork, look no further than Australian-based ergoPouch. Made from natural fibers and GOTS certified organic cotton, their sleep sacks come in two sizes: 3-12 and 8-24 months sizes. As far as weight, they’re available in four TOG-rate (Thermal Overall Grade) options in two styles: Sleeveless,and long-sleeved. Each style is designed with a two-way zipper that makes middle of the night diaper changes as easy as possible.

The name Halo is practically synonymous with sleep sacks–and for good reason. Their innovative wearable blankets were the first to market in the early 90s, developed by an engineer and father who lost his first baby to SIDS in 1991. He made it his life’s mission to make sure no other families had to suffer such a loss. The result? A product that is–to this day–the #1 choice in hospitals, available in over 1,700 nationwide. At less than $30, the Halo SleepSack is one of our top choices as well. It’s made from 100% cotton with a 0.5 TOG rating, so it’s breathable and cozy–light enough for warm nights or paired with warmer pajamas for chilly ones. For night time changes, an inverted zipper provides easy diaper access. Additionally, the roomy bottom means they’re recognized by the International Hip Dysplasia Institute as “Hip Healthy”.

We have to credit Aden + Anais with introducing us to the best baby fabric of all time–muslin. For almost two decades parents have wrapped their babes in the brand’s gorgeous swaddles and raved about the softness and breathability. The same can be said of their sleeping bags! Made from a single layer of their signature luxe cotton muslin, the 1.0 TOG rated sleep sack offers plenty of temperature regulation and warmth while still being lightweight. Like their swaddles, there are a bunch of stylish patterns to choose from.

In a word? AH-MAZING. Yes, it’s also the most expensive on our list but hear us out. Pound for pound, it’s actually the cheapest. First of all, this brilliant sleep sack is designed to be used from 2 months to 2 years. (Trust us, we tested!) They won’t outgrow it before you can swap to regular blankets and because it’s made with a silky soft Merino wool lining and organic cotton outer, it’s perfect for any weather. It’s literally the only sleep sack you need. (See? Most cost-effective in the long run!) It also comes with a slit around the bottom, which makes it suitable to be used in a car seat. If you’re traveling at night you can make sure your little one will be nice and cozy in their sleep sack. And, it comes in a ton of awesome prints!

With nearly 25K 5-star ratings, Burt’s Bees Wearable Blankets are a fan-favorite to say the least. Like their equally beloved jammies, the sleep sacks are made from soft high-quality 100% organic cotton which is ideal for sensitive skin and makes it easy to layer based on temps. And at just under $25 bucks, they’re one of the best values out there! They’re available in both 0.5 and 1.5 TOG ratings and three sizes along with a stellar selection of prints.

Chilly nights call for this enviably cozy sleep sack from Baby DeeDee. (Seriously, we want for ourselves.) The quilted style is more like a sleeping bag than a blanket with a 100% cotton exterior and soft interior that keeps them comfy all night long. A 2.5 TOG rating makes this a great option for camping as well. Other features parents love? Shoulder snaps that make it a total cinch to slide sleeping or standing babes inside and a chunky zipper that’s durable and always snag-free.

For simple, affordable no-nonsense basics, Carter’s reigns supreme. Sold as a set of three (which costs less than a single from most brands), these highly-rated sleep sacks are lightweight and small enough for even the tiniest babes. That said, they do run small and only size up to 6-9 months, so they do graduate quickly!

MiliMili knocks it out of the park with all their colorful sleep sacks, but the Kona Banana print is our ultimate favorite. The adorable wearable blanket is soft, comfy, and made from high-quality bamboo jersey fabric, which is great for babies’ sensitive skin. There’s a dual zipper, which means it opens at the top and the bottom so zipping up at bedtime or after a diaper change is a cinch! All of MiliMili’s wearable blankets come in light and mid weights as well as four sizes that fit up to 36 months. (Also—as a feel-good bonus: MiliMili is a small business that makes everything in LA and is run by two mamas 💪!)

If your baby’s outgrown the swaddle but not quite ready to transition to a traditional sleep sack, the Magic Merlin is the perfect solution for that in-between stage. Developed by a pediatric physical therapist and mom of four, and given almost 20K 5-star ratings from awestruck parents, the “magic” moniker is well-deserved. The suit allows your baby to have hands and feet out, but thanks to a snug fit in the arms, legs and belly it offers more security (and fewer reflex-induced wake-ups) than loose styles. It’s made with multiple soft cotton layers, features a double zipper for easy on and off and comes in two sizes for babies up to nine months (or when the can roll over.)

Note that for safety it should only be used with babies who sleep exclusively on their backs.