From the website:

1. Topper is worked in 2 halves, seamed together at back and sides.
2. Each half is worked in St st (k on RS, p on WS) with Seed st borders
3. Each half begins at lower front edge and is worked up to shoulders. At shoulder, an extra st is cast on at center back. This st will be used in seaming the back.

Errata (applied Sept. 9, 2015):
About 30 x 27 in (76 x 69 cm), after folding and seaming

MATERIALS
(4) balls Lion Brand Scarfie
Needles- Size 9 [5.5 mm] - 13.5 inches long

Available in different versions:
L50145 Scarfie - Taupe/Charcoal - 200 (Sep 9, 2015)
L50145B Scarfie - Cream/Black - 201 (Aug 8, 2016)