Engineered with extra buoyancy and increased chassis strength. 500D Cordura® shell, MAS air flow interior for ventilation, and professional grade reflective. Adjustable shoulders reinforced with wide 1.5" webbing that extends front to back in a single piece. Crotch strap attachment points, big stretch mesh pockets with interior organizers, and fleece pockets to warm cold hands. Media portal for radio antenna, lash tabs, and tethered whistle.