Sleep Sacks: Your Complete Guide to TOG Ratings, Sizing & Safe Sleep

Sleep Sacks: Your Complete Guide to TOG Ratings, Sizing & Safe Sleep

Everything you need to know about baby sleep sacks — what TOG means, how to choose the right weight for your room temperature, sizing guidance, and safe sleep tips from Malabar Baby.
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What Is a Sleep Sack?

A sleep sack (also called a wearable blanket) is a wearable garment that keeps your baby warm and cosy throughout the night — without the safety risks of loose blankets in the crib. Recommended by paediatricians worldwide as part of safe sleep guidelines, sleep sacks allow your baby to move their legs freely while staying snug and secure.


What Does TOG Mean?

TOG stands for Thermal Overall Grade — a standardised measure of warmth used for baby sleep products. The higher the TOG rating, the warmer the sleep sack.

Think of it like this: a TOG rating tells you exactly how much insulation your baby is getting, so you can match the sleep sack to your room temperature and season — no guesswork required.


Choosing the Right TOG Weight

Use this guide to match your room temperature to the right Malabar Baby sleep sack:

Room Temperature TOG Rating Best For
24°C / 75°F and above TOG 0.6 — Lightweight Warm summers, tropical climates, air-conditioned rooms set to warm
18–23°C / 65–74°F TOG 2.2 — Quilted Cooler evenings, autumn and winter, air-conditioned rooms set to cool

A simple rule of thumb: dress your baby in the sleep sack as you would dress yourself for the same room temperature — comfortably warm, never hot.

TOG 0.6 — Lightweight Sleep Sack

Our TOG 0.6 Lightweight Sleep Sacks are crafted from breathable, GOTS-certified organic cotton — ideal for warmer months or naturally warm sleepers. Light enough to prevent overheating, yet cosy enough to feel secure.

Shop TOG 0.6 Miami  |  Shop TOG 0.6 Greenwich  |  Shop TOG 0.6 Erawan Grey  |  Shop TOG 0.6 Pink City  |  Shop TOG 0.6 Melange

TOG 2.2 — Quilted Sleep Sack

Our TOG 2.2 Quilted Sleep Sacks feature a beautifully crafted quilted outer layer with a soft organic cotton lining — perfect for cooler nights and winter months. Warm, breathable, and designed to last through many washes.

Shop TOG 2.2 Miami  |  Shop TOG 2.2 Greenwich  |  Shop TOG 2.2 Erawan Grey

Browse the full Sleep Sack collection or explore our Award-Winning Sleep Sack Gift Sets.


Sizing Guide

Malabar Baby sleep sacks are sized by age and weight to ensure a safe, comfortable fit. A well-fitted sleep sack should be snug at the shoulders with room for the legs to move freely — never so large that your baby could slip inside.

Size Age Range Baby Weight
Small (S) 0–6 months Up to 8 kg / 18 lbs
Medium (M) 6–18 months 8–12 kg / 18–26 lbs
Large (L) 18–36 months 12–16 kg / 26–35 lbs

Note: Every baby grows differently. When in between sizes, we recommend sizing up for longevity — just ensure the neck opening fits snugly.


Safe Sleep Tips

At Malabar Baby, your baby's safety is our highest priority. Here are the key safe sleep guidelines to follow when using a sleep sack:

  • Always place your baby on their back to sleep, on a firm, flat surface.
  • Remove loose blankets and pillows from the crib — the sleep sack replaces them entirely.
  • Check the neck opening fits snugly so your baby cannot slip inside the sack.
  • Avoid overdressing underneath — a onesie or light pyjamas are usually sufficient. Overheating is a risk factor for SIDS.
  • Check your baby's temperature by feeling the back of their neck or chest — it should feel warm, not hot or sweaty.
  • Follow TOG guidelines for your room temperature (see chart above).

Frequently Asked Questions

At what age can my baby start using a sleep sack?

Sleep sacks are safe from birth. For newborns, ensure the neck opening fits snugly and the sack is the correct size. Many parents use sleep sacks right from the hospital.

Can my baby wear a sleep sack once they can roll over?

Yes. Sleep sacks are safe for rolling babies — they allow free leg movement while keeping your baby warm. Unlike swaddles, sleep sacks do not restrict arm movement, making them the preferred choice once your baby begins to roll.

What should my baby wear underneath the sleep sack?

For a TOG 0.6 in a warm room, a short-sleeve onesie is usually enough. For a TOG 2.2 in a cool room, a long-sleeve onesie or light pyjamas work well. Always check your baby's temperature at the back of the neck.

How do I wash my Malabar Baby sleep sack?

Our sleep sacks are machine washable. We recommend washing in cold water on a gentle cycle and tumble drying on low, or line drying to preserve the fabric and fill. Avoid fabric softeners, which can reduce breathability.

Can I use a sleep sack in a warm climate year-round?

Absolutely. Our TOG 0.6 Lightweight Sleep Sacks are specifically designed for warm climates and air-conditioned rooms. They're a favourite among families in Hong Kong, Singapore, and other tropical regions.

Are Malabar Baby sleep sacks made with certified organic?

Yes. Our sleep sacks are made from GOTS-certified organic cotton, free from harmful chemicals and dyes — gentle on your baby's skin and kind to the planet.


Still have questions? We're here to help. Contact our team or explore our full Sleep Sack collection to find the perfect match for your little one.