Perfect Fit
Age Guide
Find the perfect ComfyTherms size for your little one based on their age.
👶
Ages 3-4
Size 4
- Height 100-110 cm
- Chest 54-56 cm
- Waist 50-52 cm
🧒
Ages 5-6
Size 6
- Height 110-120 cm
- Chest 57-60 cm
- Waist 53-55 cm
👦
Ages 7-8
Size 8
- Height 120-130 cm
- Chest 61-65 cm
- Waist 56-58 cm
👧
Ages 9-10
Size 10
- Height 130-140 cm
- Chest 66-70 cm
- Waist 59-62 cm
🧑
Ages 11-12
Size 12
- Height 140-152 cm
- Chest 71-76 cm
- Waist 63-66 cm
💡 Size Selection Tips
📏
When in Doubt, Size Up
If your child is between sizes, go for the larger size for a more comfortable fit and longer wear time.
🌱
Growth Spurts
Consider sizing up before winter if your child is due for a growth spurt—our thermals have some stretch.
👕
Snug But Not Tight
Thermals should fit snugly to retain body heat, but never restrict movement or circulation.
Need More Help?
Check our detailed sizing guide or reach out—we're happy to help find the perfect fit.