Based on the success of the Stratus Jacket, Sun Mountain added the Short-Sleeve Pullover to the Stratus Collection. Like the Jacket, the pullover is constructed with a fabric developed by Sun Mountain’s Japanese partner for use in hot, humid climates. This two-layer, waterproof fabric has a 20K/20K waterproof/breathable rating. Stratus is lightweight, comfortable and has mechanical stretch for freedom of movement.