| Size | Chest (inches) | Chest (cm) | Back length | Best for |
|---|---|---|---|---|
| XXS | 24″ – 28″ | 61 – 71 cm | 38″ (97 cm) | Ages 5–7, up to 4′7″ tallExtra Extra Small |
| XS | 29″ – 33″ | 74 – 85 cm | 42″ (107 cm) | Ages 8–11, up to 5′1″ tallExtra Small |
| S | 34″ – 38″ | 86 – 97 cm | 47.5″ (120 cm) | Slim adults / juniors, 5′1″ – 5′7″Small |
| M | 39″ – 42″ | 99 – 107 cm | 49″ (124 cm) | Medium build adults, up to 5′11″Medium |
| L | 43″ – 46″ | 109 – 117 cm | 49.5″ (126 cm) | Adults up to 6′3″Large |
| XL | 47″ – 51″ | 120 – 130 cm | 49.5″ (126 cm) | Adults up to 6′3″Extra Large |
| XXL | 52″ – 55″ | 132 – 140 cm | 49.5″ (126 cm) | Adults up to 6′3″Extra Extra Large |
| Chest measurements are taken over shirt or sweater only. A generous allowance is made during manufacture for wearing over jacket or uniform. | ||||