This pattern is originaly designed with wool yarn, but Linen yarn works great. You can use the same size needles as pattern recommend (size needed to obtain gauge), and follow a pattern.
Sizes S-M [M-L, L-XL] (shown in size S-M)
42 [42, 51]” circumference measured below bottom button
25 [27 1/2, 27 1/2]” Length at Longest part
Yarn Linen 7 [8, 8] skeins (shown in Ecru Natural)
US #7 (4.5mm) Needles, US #8 (5.0mm) Needles, US #9 (5.5mm) Needles