The fibers of the bamboo plant that are used to make our fabrics have micro-holes and micro-gaps, so they absorb moisture and wick it away absorb moisture and wick it away and drier than synthetics or cotton. It has been found that bamboo fiber can keep the body 1-2 degrees fiber can keep the body 1-2 degrees only that, but it has thermal regulating capabilities to keep you cool in the summer and warm in the winter. Bamboo fabric also has natural UV protection.