Keeping your little one snug without overheating is all about smart layering. Here’s how our Hoolies winter collection makes it simple.

What is TOG?

TOG stands for Thermal Overall Grade—it’s a measure of warmth. The higher the TOG, the warmer the sleep sack. Choosing the right TOG for your nursery temperature helps your baby sleep safely and comfortably.

Room Temp	Base Layer	Sleep Sack	Best Combo
16–18 °C (chilly nights)	Plush Onesie OR Plush Set	2.5 TOG sleep sack	Plush base + 2.5 TOG sack
18–20 °C (typical winter room)	Cotton onesie OR Plush Onesie	2.5 TOG sleep sack OR 2 TOG sleep sack	Cotton base + 2.5 TOG sack OR Plush base + 2 TOG sack
20–22 °C (mild winter room)	Cotton onesie	2 TOG sleep sack	Cotton base + 2 TOG sack
>22 °C (warmer nights)	Cotton onesie	No sleep sack or 1 TOG	Cotton only

FAQ Section

Q: Can I use a plush onesie and a 2.5 TOG sleep sack together?
A: That’s usually too warm for a 20 °C room. Plush onesies are best for colder rooms below 18 °C. At 20 °C, we recommend a cotton onesie with a 2.5 TOG sleep sack. Always check your baby’s chest or neck—warm but not sweaty means the layers are just right.

Q: What if the room temperature changes overnight?
A: If your room tends to cool down, start with a cotton onesie and a 2.5 TOG sleep sack. If it warms up, a 2 TOG sleep sack with cotton underneath is safer. Think of TOG as adjustable comfort—lighter for warmer temps, heavier for cooler ones.

Q: How do I know if my child is too hot?
A: Feel their chest or neck. If it’s sweaty, flushed, or damp, they’re overdressed—remove a layer. Cool hands and feet are normal, but a cold chest means they may need more warmth. Trust your touch more than the thermometer.

Q: Do I need both cotton and fleece items?
A: Cotton is your everyday essential—breathable and versatile. Fleece and plush are your cosy extras for colder nights or drafty rooms. Many parents mix and match depending on the season and their baby’s natural warmth.

Q: Why can’t I just add blankets?
A: Loose blankets aren’t safe for sleep. Sleep sacks are designed to replace them, keeping little ones snug without the risk of covering their face. Layering with onesies and TOG‑rated sacks is the safest way to keep them warm.

2 Tog sleep sacks
2.5 Tog sleep sacks