I used about 350 gr of white wool.
Worked in three piece.
1° PIECE - BACK
With 5 mm needles cast on 48 stitches. Beginning with a two straight and two purl, work 21 rows. With 6 mm needles work straight and cast on 1 stitch at beginning of next 26 rows. Work a further 4 rows and than cast off.
2° PIECE - SHOULDERS
Follow the pattern in the images in a symmetrical manner and work to close the 100° rows. Combine the first two pieces, starting from the ends. Leave around 44 stitches of the second piece in a symmetrical manner for the sleeves and, in correspondence, 5 stitches of the first piece (see pictures in the blog)
3° PIECE - NECK
Collect the perimeter stitches of the work up to the edge of the first piece. Working two straight and two purl to the desired depth by the neck. Secure three hooks.