| Size | Knee Circumference | Recommended Bodyweight |
| S | 12 - 13"/30 - 33CM | Under 100lb/45kg |
| M | 13 - 14"/33 - 35CM | 100 - 150lb/45 - 68kg |
| L | 14 - 15"/35 - 38CM | 150 - 200lb/68 - 90kg |
| XL | 15 - 16"/38 - 40CM | 200 - 250lb/90 - 113kg |
| XXL | 16 - 17"/40 - 43CM | 250lb - 300lb/113kg - 136kg |
