| M | Original | XL | XXL | |
| Circ. at Head | 5.50" | 6.50" | 7.50" | 8.75" |
| Circ. at Middle | 7.00" | 8.25" | 9.50" | 11.00" |
| Circ. at Base | 7.38" | 8.75" | 10.25" | 11.50" |
| Overall Length | 11.00" | 13.00" | 15.00" | 17.25" |
| Insertable Length | 8.50" | 9.75" | 11.50" | 13.00" |
| Strap-on Ring Size | 2.50" | 3.00" | N/A | N/A |
