From the Knit Picks Website:

This drop-shoulder style bussarong (a swedish word for any upper body garment) has a bust panel, lower border and cuffs knit in a slightly modified slip-stitch pattern, taken from Barbara Walker’s big pattern collection. The special techniques utilized are provisional cast-on, 3-needle bind-off for shoulder and sleeve seams, and I-cord trims for all edges as well as for the base of the bust panel.

Needles:
Size 6 (4.0mm) and Size 7(4.5mm): 32” or longer circular
Size 4 (3.5mm) and Size 6 (4mm): 16” circular needle
Size 6 (4.0mm) and Size 7(4.5mm): DPNs