Acrylic Fibers, with a fairly dense weave, provide excellent warmth. The general thickness, allows free movement, and an attractive form fitting appearance. Outdoor activities, like Snow Boarding, Skiing, Snowshoeing, Skating, or Hiking, in cold weather, make this sweater an ideal second layer for modern cold weather underwear. The styling is suitable for business casual, in a chilly office setting. I've been wearing mine for over a month, with one washing. It appears to be quite durable, and retains it's shape. Well pleased with the selection.Acrylic Fibers, with a fairly dense weave, provide excellent warmth. The general thickness, allows free movement, and an attractive form fitting appearance. Outdoor activities, like Snow Boarding, Skiing, Snowshoeing, Skating, or Hiking, in cold weather, make this sweater an ideal second layer for modern cold weather underwear. The styling is suitable for business casual, in a chilly office setting. I've been wearing mine for over a month, with one washing. It appears to be quite durable, and retains it's shape. Well pleased with the selection.Acrylic Fibers, with a fairly dense weave, provide excellent warmth. The general thickness, allows free movement, and an attractive form fitting appearance. Outdoor activities, like Snow Boarding, Skiing, Snowshoeing, Skating, or Hiking, in cold weather, make this sweater an ideal second layer for modern cold weather underwear. The styling is suitable for business casual, in a chilly office setting. I've been wearing mine for over a month, with one washing. It appears to be quite durable, and retains it's shape. Well pleased with the selection.Acrylic Fibers, with a fairly dense weave, provide excellent warmth. The general thickness, allows free movement, and an attractive form fitting appearance. Outdoor activities, like Snow Boarding, Skiing, Snowshoeing, Skating, or Hiking, in cold weather, make this sweater an ideal second layer for modern cold weather underwear. The styling is suitable for business casual, in a chilly office setting. I've been wearing mine for over a month, with one washing. It appears to be quite durable, and retains it's shape. Well pleased with the selection.