Kinesis Aithein Disc Size Guide
| Cyclist Height (cm) | Cyclist Height (feet/inch) | Recommended Size |
| 155-163 | 5'1" - 5'4" | 47cm (XS) |
| 162-171 | 5'3" - 5'7" | 50cm (S) |
| 169-178 | 5'6" - 5'10" | 53cm (M) |
| 177-187 | 5'9" - 6'2" | 56cm (L) |
| 186-195 | 6'1" - 6'5" | 59cm (XL) |
| Cyclist Height (cm) | Cyclist Height (feet/inch) | Recommended Size |
| 155-163 | 5'1" - 5'4" | 47cm (XS) |
| 162-171 | 5'3" - 5'7" | 50cm (S) |
| 169-178 | 5'6" - 5'10" | 53cm (M) |
| 177-187 | 5'9" - 6'2" | 56cm (L) |
| 186-195 | 6'1" - 6'5" | 59cm (XL) |