Alpaca fiber is the best you can provide for you and your loved ones. The fleece provides a natural resin, no oils. Most people are allergic to the lanolin in wool and also leaves you itchy. The resin in alpaca leaves it no only soft, but is durable, resistant to odor, wrinkling, staining and damage. The fiber has a hollow core which allows for the warmth, while being light enough to wear any time! Try a pair of sox, stay comfortable. If you sweat, it will absorb like wicking material and even wont smell!