Size Guide
Age-Based Size Conversion Chart:
| Age Range | UK Size | US Size | EU Size | Chest (inches) | Length (inches) |
|---|---|---|---|---|---|
| Newborn | Newborn | NB | 50 | 16 | 17 |
| 0-3 months | 0-3M | 3M | 56-62 | 17 | 18 |
| 3-6 months | 3-6M | 6M | 62-68 | 18 | 19 |
| 6-9 months | 6-9M | 9M | 68-74 | 19 | 20 |
| 9-12 months | 9-12M | 12M | 74-80 | 20 | 21 |
| 12-18 months | 12-18M | 18M | 80-86 | 21 | 22 |
| 18-24 months | 18-24M | 24M/2T | 86-92 | 22 | 23 |
| 2-3 years | 2-3Y | 3T | 92-98 | 23 | 24 |
| 3-4 years | 3-4Y | 4T | 98-104 | 24 | 25 |
| 4-5 years | 4-5Y | 5T | 104-110 | 25 | 26 |
Favorite products
Only the softest, most practical, and adorable babywear makes it into our collection.
Only the softest, most practical, and adorable babywear makes it into our collection.
Cotton Baby Team
Cotton Baby Cardigan (9-12 months) - Ada Baby | Cotton Baby
Regular price
£34.99 GBP
Sale price
£34.99 GBP
Regular price
Fast delivery, easy returns, and the friendliest customer care for busy parents.
Fast delivery, easy returns, and the friendliest customer care for busy parents.
Cotton Baby Service
Cotton Sleepsuit (Newborn, 6-12 months & 12-18 months) - Fred & Noah | Cotton Baby
Regular price
£25.99 GBP
Sale price
£25.99 GBP
Regular price
At Cotton Baby, we carefully select high-quality babywear that brings comfort, softness, and style to your little one.
At Cotton Baby, we carefully select high-quality babywear that brings comfort, softness, and style to your little one.
Cotton Baby Team
Cotton Baby Vest (3-6 months) - Fred & Noah | Cotton Baby
Regular price
£18.45 GBP
Sale price
£18.45 GBP
Regular price
