To begin, select the size:

FireFly 6B 12 gore, 56,000 Cu. Ft.	FireFly 7B 12 gore, 65,000 Cu. Ft.	FireFly 7 18 gore, 77,000 Cu. Ft.	FireFly 8B 18 gore, 90,000 Cu. Ft.
FireFly 8 24 gore, 105,000 Cu. Ft.	FireFly 9B 24 gore, 120,000 Cu. Ft.	FireFly 9 36 gore, 140,000 Cu. Ft.	FireFly 10 36 gore, 180,000 Cu. Ft.
FireFly 11b 36 gore, 210,000 Cu. Ft.	FireFly 11 36 gore, 240,000 Cu. Ft.	FireFly 12B 36 gore, 280,000 Cu. Ft.