The dakine seeker 15l hydration backpackthe seeker 15 liter is the ultimate all season adventure mountain biking backpack whether single day or multiday this weatherproof pack keeps your gear dry through the winter snow or spring rain showers thanks to the rolltop design and weather resistant coating when the heat turns up you39ll appreciate the cooling effect of the ventilated air suspension back panel and the breathable ergonomic shoulder straps the 3 liter lower hydrapak lumbar r