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Elbow Pro-X
| Size | Bicep (in) | Forearm (in) |
| Y S/M | 8 - 9.5 | 5 - 6 |
| Y L/XL | 9.5 - 11 | 6 - 7 |
| Size | Bicep (cm) | Forearm (cm) |
| Y S/M | 20 - 24 | 12.5 - 15 |
| Y L/XL | 24 - 28 | 15 - 18 |
Knee Pro-X
| Size | Thigh (in) | Calf (in) |
| Y S/M | 10 - 12 | 6.5 - 8.5 |
| Y L/XL | 12 - 14 | 8.5 - 10.5 |
| Size | Thigh (cm) | Calf (cm) |
| Y S/M | 23.5 - 30.5 | 16.5 - 21.5 |
| Y L/XL | 30.5 - 35.5 | 21.5 - 27 |
Youth Shirt Pro-X
| Size | Chest (in) | Average Height (in) | Age |
| S | 26 - 28 | 50 - 54 | 8 - 10 |
| M | 28 - 30 | 54 - 58 | 10 - 12 |
| L | 30 - 33 | 58 - 62 | 12 - 13 |
| XL | 33 - 36 | 62 - 67 | 13 - 15 |
| Size | Chest (cm) | Average Height (cm) | Age |
| S | 66 - 71 | 127 - 137 | 8 - 10 |
| M | 71 - 76 | 137 - 147 | 10 - 12 |
| L | 76 - 84 | 147 - 157.5 | 12 - 13 |
| XL | 84 - 91.5 | 157.5 - 170 | 13 - 15 |
Youth Short Pro-X & Pro-T
| Size | Waist (in) | Average Height (in) | Age |
| S | 24 - 25.5 | 50 - 54 | 8 - 10 |
| M | 25.5 - 27 | 54 - 58 | 10 - 12 |
| L | 27 - 28.5 | 58 - 62 | 12 - 13 |
| XL | 28.5 - 29.5 | 62 - 67 | 13 - 15 |
| Size | Waist (cm) | Average Height (cm) | Age |
| S | 61 - 65 | 127 - 137 | 8 - 10 |
| M | 65 - 69 | 137 - 147 | 10 - 12 |
| L | 69 - 72.5 | 147 - 157.5 | 12 - 13 |
| XL | 72.5 - 75 | 157.5 - 170 | 13 - 15 |
