The Outdoor Products Kilometer Hydration Backpack is a portable, washable, and refillable 2L water blatter designed for outdoor activities. The backpack features a buckle closure, adjustable size, and padded comfort. The sleek grey design with orange trim makes it easy to spot. With a single pocket, this unisex backpack is suitable for any sport or activity, making it a versatile choice for staying hydrated on the go.