Mizuno Waterproof 20K ER Jacket. Men’s running apparel. Premium waterproof and breathable jacket (20K waterproof/25K Breathability) for superior protection during heavy rain conditions. Extremely light stretch woven and fully taped seaming fabric to enhance comfort and freedom of movement. Adjustable hoody with stretch binding and waterproof front zipper. Back pocket for storage during runs and packable feature. 2 zipper pocket for more storage.