I have thinked this vest for autumn/spring months.
It is 100% alpaca, about 200 gr for size S (35 cm x 55 cm).
In the pattern you can find the measures for size M also.
Pay attention: the vest fits SLIM.
You need two hooks : n. 3.5 for the edge and n. 4.0 for the body.
The pdf has 6 pages and contains written pattern and 2 charts for learning the CROSS STITCH and for making neck decreases.