Size Chart - Third Street
| Infant | Height | Weight (lbs) | Chest | Waist |
|---|---|---|---|---|
| 3M | 23-25 | 11-14 | 19 | 18 |
| 6M | 25-27 | 14-18 | 20 | 18.5 |
| 12M | 27-30 | 18-22 | 21 | 19 |
| 18M | 30-33 | 22-26 | 22 | 19.5 |
| 24M | 33-35 | 26-30 | 23 | 20 |
| Toddler | Height | Weight (lbs) | Chest | Waist |
| 2T | 33-35 | 26-30 | 23 | 20 |
| 3T | 35-38 | 30-35 | 24 | 20.5 |
| 4T | 39-42 | 35-40 | 25 | 21 |
| 5T | 42-47 | 37-45 | 27 | 22 |
| Youth | Height | Weight (lbs) | Chest | Waist |
| YXS (5) | 42-47 | 37-45 | 27 | |
| YS (6-8) | 47-51 | 50-60 | 29 | |
| YM (10-12) | 51-55 | 60-70 | 32 | |
| YL (14-16) | 56-60 | 70-80 | 35 | |
| YXL (18) | 60-64 | 80+ | 38 |
