This jacket is made in thin pure wool, in stockinette and with garter st edges.
There is a decorative tuck in a contrasting color both on the sleeves and around the edge of the jacket.
The construction is as a regular, longer jacket, with raglan sleeves, and it has a knitted edge around, that makes a very flattering shape.
It can be worn open, or, if desired, closed with a pin or button. The collar can be worn on the inside of the tuck, or it can fall out over the tuck. The sleeves are quite long, and can be worn as is, or folded up to half the length of the cuffs.
The pattern is available on Ravelry: http://www.ravelry.com/patterns/library/21-copenhagen-jacket