Similar to the 66-100, the 3 /4 gel insole provides the same quality construction as the full length, but with a more slim design, allowing it to be lower profile and fitting a wider variety of footwear.
| Part # | Size |
| 66-102-2 | Small (W 5- 6) |
| 66-102-3 | Medium (M 6- 8, W 7- 9) |
| 66-102-4 | Large (M 8.5- 11, W 9.5- 12) |
| 66-102-5 | X-Large (M 11- 13) |
