0.5 TOG vs 1.0 TOG: Which Sleep Sack Should You Choose?

If you're deciding between a 0.5 TOG and a 1.0 TOG sleep sack, you're not alone—this is one of the most common questions parents ask.

And the truth is, both can be the right choice—it just depends on your baby’s sleep environment.

What’s the Difference Between 0.5 TOG and 1.0 TOG?

• 0.5 TOG: Lightweight, best for warm rooms
• 1.0 TOG: Slightly warmer, for moderate temperatures

Think of it as choosing between a light sheet and a thin blanket.

If you’re new to TOG, this TOG chart guide breaks it down simply.

When to Choose 0.5 TOG ☀️

A 0.5 TOG sleep sack works best when your baby’s room is warm—typically above 75°F.

• Summer months
• Homes with warmer climates
• Babies who tend to sweat

You can explore 0.5 TOG bamboo sleep sacks here .

When to Choose 1.0 TOG 🌙

A 1.0 TOG sleep sack is better for slightly cooler rooms, usually between 68–75°F.

• Spring or fall nights
• Air-conditioned rooms
• Babies who don’t run hot

Quick Decision Guide

• Hot room? → 0.5 TOG
• Comfortable room? → 1.0 TOG

👉 When in doubt, start lighter—you can always add layers.

If your baby tends to overheat, this guide on night sweating can help.

Frequently Asked Questions

Is 0.5 TOG too cold?

Not in warm rooms—it’s designed for summer temperatures.

Can I use 1.0 TOG in summer?

Only if the room is air-conditioned and cooler.

Which TOG is best for newborns?

It depends on room temperature, not age.