Sun Mountain introduced the Monsoon for the rain season. It has exploded, making the introduction of a short-sleeve version the next logical step. The Monsoon is made with a waterproof fabric with mechanical stretch; a soft, quiet hand; and excellent drape. The waterproof, fully seam-sealed Monsoon Short-Sleeve is an excellent value as it is available at the same price point as most short-sleeve windshirts. Two-year waterproof guarantee.