From the North American Schachenmayr website:

Finished waist circumference dimensions:
66, 75, 80, 89, 99 cm
26, 29.5, 31.5, 35, 39 inches

Yarn Information:
Photographed in 05287 Grey/Black.
6, 7, 7, 8, 8 skeins
852, 994, 994, 1136, 1136 yards

Extras:
Optional: enough elastic to thread 3-4 rounds through the ribbed waist.

Gauge notes:
- US 4-6 and 6-7 are the listed pattern needles. The instructions state that these needles can be required in order to achieve gauge for the different fabrics.