The Gila Vest from Mizuno features Ipermalite with up to 10,000mm of water protection, Mizuno's Japanese Fabric Engineers have created the highest lavel of lightweight performance fabric. The combination of a Microwave shell and a lightweight, waterproof and breathable laminate provides usurpassed performance and comfort. Mizuno's DYNAMOTION FIT for Running design technology coordinates fabric characteristics with specific sport patterns, eliminating stress and allowing unrestricted motion for better performance. StandardFit aligns with the contour of your body while still allowing for ease of mobility.