the Roll-Top Pack with Built-In Padded Protection. the Ventilated Back Panel of the Sargasso Backpack Rucksack Brings Breathable Relief as the Temperatures Rise While Reinforced PVC Fabric Provide Protection From the Elements. Features Ergonomic & Adjustable Shoulder & Backpack Rucksack Rucksack Straps for Comfort & Performance. Minimum Quantities Apply.