You will need:
Two hanks of Dovestone DK, one each of two colours. Cowl shown in Yorkstone and Parkin, scarf shown in Aire and Chevin.
A 4.5mm/US 7 80cm/32″ or longer circular needle for the scarf; a 4.5mm/US 40cm/16″ circular needle for the cowl.
Stitch markers (9 for the scarf, 4 for the cowl).