The Fjallraven Men's Koster Sweater is a lambs wool sweater for staying warm in the cold. Holiday parties, work on a Tuesday, day hiking the day while the evenings are spent cuddled up fireside, you get the picture. This casual sweater will look good doing it all and help you stay warm as well. The shoulders and elbows are reinforced with G-1000 fabric for durability out in the woods, while the rest is soft as can be. As handsome in the field while hunting as it is indoors.