Armstrong Downwind MK III Foilboard
| Length: | 6'11 | 7'3 | 7'7 | 7'11 | 8'2 |
| Width: | 18 1/4" | 18 1/2" | 18 3/4" | 19 1/4" | 19 1/4" |
| Thickness: | 5 1/2" | 5 3/4" | 5 3/4" | 6" | 6" |
| Volume: | 95 L | 105 L | 115 L | 125 L | 135 L |
| Weight: | 5.4 - 5.8 kg | 5.6 - 6.2 kg | 6.2 - 6.8 kg | 6.4 - 7.0 kg | 6.8 - 7.4 kg |