About the Altura Vortex Ultralite Pannier Possibly the lightest pannier in the world with the added feature of being fully waterproof. Perfect for those adventures when you need to pack light. The Vortex Ultralight Pannier is a dream come true, it’s the ideal solution for the minimalist adventurer who likes to pack light, weighing in at only 260g. The roll top closure secured with a hook system helps ensure compact packing further reducing bulk. Additional reflective logo helps you stand out in low light. Key Features  Ultralight design.Waterproof.Roll closure.Reflective details.15L Capacity.  Luggage Buying Guide