Firewire Seaside Helium
| Size | Volume (L) | Width | Thickness |
| 5' 02" | 26.5 | 20" | 2 5/16" |
| 5' 03" | 28.2 | 20 5/16" | 2 3/8" |
| 5' 04" | 29.8 | 20 5/8" | 2 7/16" |
| 5' 05" | 31.5 | 20 15/16" | 2 1/2" |
| 5' 06" | 32.7 | 21 1/4" | 2 1/2" |
| 5' 07" | 33.6 | 21 5/8" | 2 1/2" |
| 5' 08" | 35.4 | 21 15/16" | 2 9/16" |
| 5' 09" | 37.3 | 22 1/4" | 2 5/8" |
| 5' 10" | 39.4 | 22 5/8" | 2 11/16" |
| 5' 11" | 41.1 | 22 3/4" | 2 3/4" |
| 6' 00" | 44.8 | 22 7/8" | 2 15/16" |
| 6' 01" | 46.5 | 22 15/16" | 3" |