| Size | Spine Length (IN) | Spine Length (CM) | Flap (IN) | Flap (CM) | Saddle Seat Size |
| S | 17 | 43.2 | 15 | 38.1 | 15-15.5 |
| M | 20 | 50.8 | 18 | 45.7 | 16-16.5 |
| L | 21 | 53.3 | 18 | 45.7 | 17-17.5 |
| XL | 22 | 55.9 | 18.5 | 47.0 | 18-18.5 |
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| Size | Spine Length (IN) | Spine Length (CM) | Flap (IN) | Flap (CM) | Saddle Seat Size |
| S | 17 | 43.2 | 15 | 38.1 | 15-15.5 |
| M | 20 | 50.8 | 18 | 45.7 | 16-16.5 |
| L | 21 | 53.3 | 18 | 45.7 | 17-17.5 |
| XL | 22 | 55.9 | 18.5 | 47.0 | 18-18.5 |