Everyone knows how warm wool is. The natural insulating properties of wool along with the ability to wick sweat and keep your skin dry has made it a favorite among hikers, backpackers, campers, etc. The only nameable downside to wool is the scratchy, itchy texture of the wool fibers. Synthetic fabrics can cause allergic reactions in the skin making them not an option form many. For others the scratchy, itchy feeling of wool is unbearable and not a good option either. Well, that's where Merino wool comes in. Merino wool comes from merino sheep. The wool fibers of merino sheep are finer and softer and non itchy making it the perfect natural solution to staying, warm, dry and comfortable. With merino wool, you get all the natural features of wool without the itch.