Segmented High Density spinal and chest plates - top-level protection. Constructed of superlite Low Density foams for comfort. Collarbone arch protection - reinforced with poly inserts. Optimax™ moisture management system: Open Mesh Fabric - Allows air to circulate into the lower layers. High-moisture absorption layer - offers a comfort cushioning that absorbs moisture. It's breathable and dries water quickly. Dri-Fit™ lining - Transports moisture away from the skin, keeping you comfortable longer. Microban™ - a built-in anitmicrobial protection that inhibits the growth of odor causing bacteria, mold and mildew. Adjustable / Removable Stomach protector.