The Eight Best Sleep Sacks for Summer

(This post contains affiliate links. See our disclosure.)

According to the American Academy of Pediatrics, blankets are not safe in cribs for babies under one. And once your baby is a wiggly toddler, it’d be a rare occurrence for them to make it through the night without them kicking off their blanket.

So what’s the best way to keep your little one safely covered at night? Wearable blankets, otherwise known as sleep sacks.

Image: Woolino


First things first, let’s talk about TOG. What does it mean, and why does it matter?

TOG stands for Thermal Overall Grade, and it is a measurement of a blanket’s thermal effectiveness – aka how well it keeps your baby warm. The higher the TOG number, the warmer the sleeping sack.

Babies aren’t good at regulating their body temperature, and overheating is a risk factor for SIDS. Choosing the right sleep sack will ensure they stay comfortable and safe while they sleep.

One helpful tip is never to dress a baby in more than one additional layer than an adult would find comfortable.


The most common TOG ratings you’ll see when looking for sleep sacks are 0.5, 1.0, and 2.5. For summer months and warmer weather, you’ll want to pick a sleep sack with a rating of 1.0 or lower.

Keep in mind the temperatures below are based on your baby’s nursery, not the weather outdoors.

0.5 TOG – 75 – 81°F
1.0 TOG – 69 – 74°F
2.5 TOG – 61 – 68°F


1 |  Woolino Sleeping Bag ($99.99)

Made from 100% Australian merino wool, the Woolino Baby Sleeping Bag will keep your baby “warm when it’s cold and cool when it’s hot.” It creates a micro-climate around your baby, maintaining a consistent and comfortable temperature.

In warmer weather, it will absorb water away from your baby’s skin and release it into the atmosphere, and during the cooler months, it will trap and circulate warm air.

Another thing to love about this sleep sack is the closable seat-belt slot that makes for easy transfer from the car (or stroller) to the crib. This one is on the pricier end, but it may be worth the splurge as it’s good to use year-round, and it will fit your baby from 2 months up to 2 years!

2 |  Nested Bean Zen Sack Class ($34.99)

Babies sleep better when they can feel your touch, but we can’t always be right there beside them while they sleep.

Nested Bean helped solve that problem by creating a line of swaddles and sleep sacks that mimic your touch with lightly weighted pads on the chest and sides. Have a stomach sleeper? You can reverse the Zen Sack so the weight is on your baby’s back instead of their chest.

The Zen Sack is made from 100% luxuriously soft cotton, and it has adjustable shoulder tabs that allow for growth and a two-way zipper system for middle-of-the-night diaper changes.

TOG rating = 0.5

3 |  Halo Sleepsack Wearable Blanket ($21.99)

The Halo SleepSack is “the original wearable blanket” and the #1 selling sleep sack on the market. It is made of 100% cotton and comes in various styles and fabrics, from newborns to toddlers. It’s available as both a swaddle and as a footed sleepsack, in addition to the traditional sleep sack.

Other things to love are that it’s recognized as “Hip Healthy” by the International Hip Dysplasia Institute due to the roomy sack design, and the inverted zipper makes for easy diaper changes.

TOG rating = 0.5

4 |  Swaddle Designs Muslin Sleeping Bag ($16.99)

These sleepers from SwaddleDesigns are made from oh-so-soft open-weave muslin cotton. This one is the lightest sleep sack on our list, making it an ideal choice for those in warm to hot climates.

Like all muslin products, this sleep sack gets softer and softer with every wash, and the 2-way zipper will make for easy diaper changes.

TOG rating = 0.3

5 |  Baby Deedee Sleep Nest Lite Sleeping Bag ($34)

We love the winter weight Sleep Nest from Baby Deedee and were thrilled to discover they make a lightweight version for summer too!

The Sleep Nest Lite is made from double-layered jersey cotton that’s as soft as your favorite tee. Its unique shoulder snaps make it easy to place your baby into the sleep sack, even while sleeping, in just two easy steps (no wrestling wiggly arms into the armholes!).

TOG rating = 0.6

6 |  Kyte Baby Bamboo Rayon Sleeping Bag ($44.99)

We promise you there is no fabric more luxurious than the silky smooth bamboo rayon used to make Kyte Baby sleep sacks. Bamboo fibers create a fabric that is gentle, breathable, and hypoallergenic making it great for babies with sensitive skin. And not only that, but bamboo is one of the most sustainable resources on earth, so this one is an eco-friendly choice too.

Beyond the fabric, one other thing to love about Kyte Baby is the vibrant rainbow colors their sleep sacks come in.

Available in both TOG rating 0.5 and 1.0.

7 |  Love to Dream Swaddle Up Transition ($34.95)

The Swaddle UP Transition is a combo between a sleep sack and swaddle, making it ideal for younger babies not quite ready for a traditional sleep sack.

The wings allow your baby to sleep in their natural arms-up position safely. Once they are ready, the wings can be removed one at a time to help your baby gradually transition to arms-free sleeping.

TOG rating = 1.0

8 |  Beekeeper Organic Wearable Blanket ($22.95)

Last on our list, but certainly not least, is the Wearable Blanket from the one and only Burt’s Bees Baby. This sleep sack is made from 100% GOTS Certified Organic Cotton that’s combed and spun for durability, softness, and no-pill washing. The zipper opens from the bottom for late-night diaper changes, and it has a zipper cover to keep little hands away from the pull.

TOG rating = 0.5

The Eight Best Sleep Sacks for Summer

One Comment

  1. I’d love to know about summer appropriate swaddle style “sacks.” I feel like swaddle blankets come loose too easily after a certain age but so many of the zip up swaddle sacks are so hot…

Leave a Reply

Your email address will not be published. Required fields are marked *