Best Sleep Sacks by TOG Rating (2026)
Which sleep sack TOG to use at each room temperature, from the HALO, Love to Dream and aden + anais charts, plus six sleep sacks from 0.5 to 2.5 TOG.
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Quick answer
Match the TOG to the nursery's temperature: roughly 0.5 to 1.0 TOG for a warm room around 75°F, about 1.0 TOG for 68 to 75°F, and 2.5 TOG for a cool 61 to 68°F room. The brands' charts differ by a few degrees, and the AAP says your baby needs only one more layer than you.
In this guide
- Warm rooms, 72 to 75°FHALO SleepSack 100% Cotton Wearable Blanket (0.5 TOG)From the listing · not tested
- Organic cotton, two warmthsBurt's Bees Baby Beekeeper Wearable Blanket (0.5 or 1.5 TOG)From the listing · not tested
A sleep sack's warmth should follow the nursery's actual temperature, not the season. The three makers' charts come first, then six sacks from 0.5 to 2.5 TOG and what to put on underneath.
How we chose: temperature ranges come from HALO's TOG chart, Love to Dream's TOG temperature chart and aden + anais's TOG guide, and safety advice from the American Academy of Pediatrics safe sleep guide; the six sacks are sold by Amazon.com or their makers, and we did not test them.
Which TOG at which room temperature
The three charts agree on the direction but not the exact numbers:
| Room temperature | HALO | Love to Dream | aden + anais |
|---|---|---|---|
| Warm (about 75°F and up) | 0.5-1.0 TOG (68-77°F) | 0.2 TOG (75-81°F) | 0.2-1.0 TOG (75°F and up) |
| Average (about 68-75°F) | 0.5-1.0 TOG, or 1.5 TOG (64-75°F) | 1.0 TOG (68-75°F) | 1.0-2.5 TOG (68-75°F) |
| Cool (about 61-68°F) | 2.0-3.0 TOG (60-72°F) | 1.5 TOG (64-72°F), 2.5 TOG (61-68°F) | 2.5-3.5 TOG (61-68°F) |
| Cold (below 61°F) | Not listed | 3.5 TOG | 3.5-4.5+ TOG |
Treat the charts as a starting point. HALO's own chart says "your nursery's temperature, your baby's clothing layers, and your baby's individual comfort should all be considered," and HALO's listing for its 0.5 TOG sack gives a narrower range (72 to 75°F) than the chart.
The six sleep sacks
| Sleep sack | TOG | Best for (maker's chart) | Fabric | Sold by | Amazon price |
|---|---|---|---|---|---|
| HALO SleepSack Cotton | 0.5 | Warm rooms | 100% cotton | HALO | $34.95 (Amazon, as of Nov 12, 2026, 11:01 PM UTC)Check price |
| Burt's Bees Beekeeper | 0.5 or 1.5 | Warm or average rooms | Organic cotton | Amazon.com | $23.09 (Amazon, as of Nov 12, 2026, 11:02 PM UTC)Check price |
| Kyte Baby Sleep Bag 1.0 | 1.0 | Average rooms | Bamboo rayon | Kyte Baby | $55.99 (Amazon, as of Nov 12, 2026, 11:02 PM UTC)Check price |
| Love to Dream Sleeveless 1.5 | 1.5 | 64-72°F | Cotton fleece | Love to Dream | $44.95 (Amazon, as of Nov 12, 2026, 11:02 PM UTC)Check price |
| Kyte Baby Sleep Bag 2.5 | 2.5 | Cool rooms | Bamboo rayon | Kyte Baby | $62.99 (Amazon, as of Nov 12, 2026, 11:01 PM UTC)Check price |
| Love to Dream Long Sleeve 2.5 | 2.5 | 61-68°F | Quilted cotton | Love to Dream | $42.99 (Amazon, as of Nov 12, 2026, 11:02 PM UTC)Check price |
Prices are Amazon's, as of the time shown, and subject to change. Details
If you buy only one, make it a 1.0 TOG such as the Kyte Baby 1.0, which sits in the average-room band on all three charts. The Burt's Bees listing covers both 0.5 and 1.5 TOG, so check which one is in your cart.
What to put on underneath
The AAP's rule: "Your baby only needs one more layer than you would wear in the same environment to be comfortable." The sleep sack counts as a layer.
- In a warm room, for example, a short-sleeved bodysuit under a 0.5 TOG sack.
- In a cool room, footed pajamas under a warmer sack. Our baby pajamas guide covers which pajamas, and the snug-fit rule after 9 months.
- The AAP also says: "Don't put a hat on your baby while indoors once you're home from the hospital."
Signs your baby is too hot
Key point: the AAP warns that "overheating can increase the risk of SIDS," and tells parents to "check your baby for signs of overheating such as sweating, a hot chest or flushed skin."
If the chest feels hot or damp, take off a layer or step down a TOG.
What to avoid
- Weighted sleep sacks and swaddles. The AAP: "Don't use weighted blankets, sleepers, swaddles or other weighted objects on or near your baby."
- Loose blankets. The AAP suggests layers of clothing or a wearable blanket instead.
- Swaddling once your baby tries to roll. The AAP: "When your baby looks like they're trying to roll over, you should stop swaddling them." A sleeveless or long-sleeve sleep sack with arms free is the next step.
Pro tip: buy two sacks in the TOG that suits your nursery so one can be in the wash, then a lighter or warmer one only if the room changes a lot between seasons.
For the rest of the sleep space, see our Snoo alternatives guide and the "What to skip" list in our budget registry checklist.
The products in this guide
In the order this guide discusses them, from listings and published standards. Where a price appears it is Amazon's, with the time it was read.
Warm rooms, 72 to 75°F
HALO SleepSack 100% Cotton Wearable Blanket (0.5 TOG)
From the listing · not testedBuy it if your nursery runs warm, about 72 to 75°F on HALO's listing.
Pros
- + 0.5 TOG cotton for warm rooms; HALO's listing says 72 to 75°F
- + Bottom-opening zipper for diaper changes
- + HALO says it is approved by the International Hip Dysplasia Institute
Cons
- - Sized by age; you will need the next size up as your baby grows
Organic cotton, two warmths
Burt's Bees Baby Beekeeper Wearable Blanket (0.5 or 1.5 TOG)
From the listing · not testedBuy it if you want organic cotton; pick 0.5 or 1.5 TOG before you check out.
Pros
- + Offered as a lightweight 0.5 TOG organic cotton or an insulated 1.5 TOG version
- + Bottom-opening zipper; sizes 0-6 to 18-24 months
Cons
- - Check which TOG you are adding to your cart: the listing covers both
Average rooms, 68 to 75°F
Kyte Baby Sleep Bag 1.0 TOG
From the listing · not testedBuy it if your nursery sits at an average 68 to 75°F.
Pros
- + 1.0 TOG: 97% rayon made from bamboo and 3% spandex, polyester filled
- + Double zipper opens top-down or bottom-up for diaper changes
Cons
- - One TOG per listing; buy a second weight for other seasons
Rooms a little under 72°F
Love to Dream Sleeveless Sleep Bag 1.5 TOG
From the listing · not testedBuy it if your room runs 64 to 72°F and pajamas keep the arms warm.
Pros
- + 1.5 TOG brushed cotton fleece, designed for 64 to 72°F, per Love to Dream
- + Recognized as hip-healthy by the International Hip Dysplasia Institute, per the listing
- + OEKO-TEX certified fabric; two-way zipper
Cons
- - Sleeveless, so it relies on the pajamas underneath for arm warmth
Cool rooms
Kyte Baby Sleep Bag 2.5 TOG
From the listing · not testedBuy it if your nursery is cool, below about 68°F.
Amazon listed this as shipping later, not in stock now, as of Nov 12, 2026, 11:01 PM UTC.
Pros
- + 2.5 TOG version of Kyte's bamboo-rayon sleep bag for cooler rooms
- + Double zipper for diaper changes
Cons
- - Too warm for most rooms above 68°F on the brands' charts
Toddlers in cool rooms
Love to Dream Long Sleeve Sleep Bag 2.5 TOG
From the listing · not testedBuy it if your toddler's room is 61 to 68°F and you want sleeves.
Pros
- + 2.5 TOG quilted cotton with long sleeves, for 61 to 68°F on Love to Dream's chart
- + Covered twin zip; sized for up to 12 months of growth
- + Machine washable and tumble-dry friendly
Cons
- - This listing is the toddler size, 18 to 36 months
Frequently Asked Questions
What TOG sleep sack should I use at 70°F?
Around 1.0 TOG. At 70°F, Love to Dream's chart puts you in its 1.0 TOG band (68 to 75°F), aden + anais recommends 1.0 to 2.5, and HALO's chart covers it with 0.5 to 1.0 or 1.5 TOG. Adjust the layer underneath rather than jumping TOGs.
What does TOG mean on a sleep sack?
"Thermal overall grade," a measure of how well a fabric insulates. The higher the TOG, the warmer the sack: 0.2 to 0.5 is lightweight, about 1.0 is all-season, and 2.5 or more is for cool rooms.
Is a 2.5 TOG sleep sack too warm?
In most rooms above 68°F, yes. Love to Dream designs its 2.5 TOG for 61 to 68°F, and aden + anais recommends 2.5 to 3.5 TOG for that range. Check the room temperature, and check your baby for sweating or a hot chest.
What temperature should a nursery be, and is a space heater safe?
The AAP says to keep the room "at a comfortable temperature" and to dress your baby in "no more than one extra layer than you would wear"; your baby may be too hot "if they are sweating or if their chest feels hot."
If you use a space heater, CPSC says to keep it at least three feet from things that can burn, plug it straight into a wall outlet, and "never leave portable heaters turned on while sleeping," so warm the room before bedtime and switch it off.
Proof
Sources
Everything this guide relies on, as linked in the text. Last checked September 27, 2026.
- HALO: HALO's TOG chart
- Love to Dream: Love to Dream's TOG temperature chart
- HALO: Sleeping bag tog chart
- American Academy of Pediatrics: American Academy of Pediatrics safe sleep guide
- American Academy of Pediatrics: Preventing SIDS
- U.S. Consumer Product Safety Commission: CPSC says
NurseryProof is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. This guide summarizes public safety guidance and makers' charts and is not medical advice; ask your pediatrician about your baby's needs.
Amazon prices and availability change often; cards with a live Amazon price show when it was last checked. As an Amazon Associate I earn from qualifying purchases.
