AETHER (E'ther) n. Greek Mythology 1. The upper regions of space; the clear sky; the heavens. 2. The fifth and highest element after air, earth, fire and water; believed to be the substance composing all heavenly bodies. Aether is a pure expression of form and function. By utilizing technologically advanced fabrics in a more sophisticated form, the collection offers sportswear for the outdoor enthusiast who wants function without sacrificing modern design and aesthetics.