2015 Sun Mountain Cumulus Jacket - Womens Incorporating 2.5 Layer Technology, the Cumulus has a woven shell with advanced DWR laminated to a waterproof, breathable membrane with a protective inner layer. Introduced in 2014, Cumulus is Sun Mountain's most breathable rainwear. Super lightweight, fully seam-sealed, waterproof and breathable Two-way center front zipper Back pleat for range of motion Compact folded size for easy storage in your golf bag Adjustable hem and cuffs Stand-up collar and zippered hand warmer pockets Two-year waterproof guarantee