These charts are for reference only. Fit may vary depending on the construction materials and manufacturer
| Beneunder Size | Inches | CM |
| Upper circumference length | 10.43 | 26.5 |
| Center seam length | 10.04 | 25.5 |
| Lower jaw length | 8.35 | 21.2 |
| Mouthpiece height | 6.10 | 15.5 |
| Ear Cord Length | 7.87 | 20 |
