Boris is a unisex sweater. Sizes are provided for a woman’s S/M/L and a man’s M/L/XL.
Can be knit as a cardigan as well, but only instructions for women’s sizes are provided.
Rowan’s Magpie Aran yarn is discontinued. According to the Rowan website, Scottish Tweed Aran can be used as a substitute. You may need to adjust your needle size to get gauge, though, as it knits to a slightly larger gauge than the Magpie Aran (1 st out on a 10cm square)