This new Henley End-On-End Sweater is quality through and through, manufactured using Merino wool and cotton which is naturally breathable and provides ultimate warmth. Merino wool is from Merino sheep, primarily found in New Zealand. Wool is a living material that adjusts to your body temperature. When it\'s warm, moisture and body heat is absorbed by the wool and transported away into the air. When it\'s cold, warmth is retained in the millions of microscopic air pockets naturally present in Merino wool.