Sleep Sacks & Warmth Ratings (TOG) in Canada (2025)
- Dennis S.
- Sep 14
- 3 min read
Updated: Sep 14
As a new Calgary dad, I’ve learned the late-night shuffle is a lot easier when your baby is cozy and safe. Sleep sacks (wearable blankets) keep little ones warm without loose bedding, and each one has a warmth rating (often called TOG)—a simple number that tells you how warm it is. Below are easy picks Canadian parents love, plus a no-stress guide to choosing the right warmth for your home.
Safety first (Canada): Sleep sacks can replace blankets; choose the right size and warmth for your room, and avoid weighted sleep sacks and swaddles. These aren’t considered safe in Canada.
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Quick Picks
Best Overall (soft everyday) — Kyte Baby Sleep Bag (bamboo)
Cloud-soft, smooth zipper, multiple warmth options; easy to find at Canadian baby stores.
Best Cold-Room/Winter — Woolino 4-Season Merino Sleep Sack
Merino helps regulate heat across seasons; popular “buy once” option. Widely available in Canada.
Best Budget (Canadian brand) — Perlimpinpin Sleep Bag
Trusted, widely stocked in Canada with clear warmth charts and lots of sizes.
Best “Everywhere” Choice — HALO SleepSack (cotton/fleece)
Simple, reliable, easy to clean, and easy to buy online and in stores.
Best for Swaddle Transition — Love To Dream Transition Bag
Zips “wings” off to move to arms-out sleep when baby starts rolling. (Use arms-out once rolling.)
Best for Warm Apartments/Summer — Nest Designs Bamboo Sleep Bag
Breathable, soft, with lighter warmth options Canadian parents like.
Best for Walkers/Toddlers — ErgoPouch Sleep Suit Bag
Converts from a bag to split legs for little wanderers; offered in several warmth levels in Canada.
How to choose (no overthinking)
1) Pick a warmth rating for your room: Use your nursery’s temperature as your guide (a cheap room thermometer helps).
Warmer rooms (~20–24°C): choose lighter warmth (often labelled 0.5–1.0).
Cooler rooms (~16–20°C): choose a warmer option (often 2.5).Always check the brand’s chart for exact guidance.
2) Size matters: Get a snug neck/arm fit so baby can’t slip inside, and enough leg room to move.
3) Keep the crib clear: No loose blankets, pillows, bumpers, or toys in the sleep space.
4) Skip weighted products: Weighted sleep sacks/swaddles/blankets are not recommended in Canada.
Mini-reviews
Kyte Baby Sleep Bag (bamboo) — “Soft everyday favorite”
Parents love the feel and simple design. Multiple warmth levels and sizes; easy to find at Canadian retailers like Snuggle Bugz.
Woolino 4-Season Merino — “Buy once for all year”
Merino helps keep baby comfy across temperature swings, so many families use this as their one-and-done sack. Available on Amazon.ca.
Perlimpinpin Sleep Bag — “Great value, Canadian brand”
Lots of prints and warmth options, clear warmth guidance, and broad availability.
HALO Sleep Sack — “Simple, everywhere, dependable”
A go-to pick for daycare and travel; cotton or fleece options, easy care, and easy to buy.
Love To Dream Transition Bag — “Smooth swaddle exit”
Zip off the “wings” to move to safe, arms-out sleep when rolling starts. (Stop swaddling once baby shows signs of rolling.)
Nest Designs Bamboo — “For warm homes”
Light, breathable options for warmer rooms or summer months.
ErgoPouch Sleep Suit Bag — “For toddlers on the move”
Bag or legs—your call. Handy for walkers and early morning play. Sold by Canadian baby stores.
What to wear under the sack (simple layering)
Warmer room: short-sleeve onesie under a lighter sack.
Cooler room: footed PJs under a warmer sack. Adjust one layer at a time and feel baby’s chest (warm, not sweaty). Always follow each brand’s “what to wear” guide for best results.
Safety notes (Canada)
Put baby on their back for every sleep and keep the crib clear.
Choose the right size and a warmth level that matches your room.
No weighted sleep sacks or swaddles.
FAQs
Q: Which warmth rating should I start with?
A: Match it to your room: warmer rooms usually need a lighter option; cooler rooms need a warmer one. Check the brand’s chart and adjust a single layer at a time.
Q: Can I use a sleep sack and a blanket together?
A: Skip loose blankets in the crib. A properly sized sleep sack replaces a blanket.
Q: When should I stop swaddling and move to a sleep sack?
A: Stop swaddling around the time your baby shows signs of rolling and switch to arms-out sleep. A transition bag can help.
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