The Eddie Bauer Hydration Backpack in blue and black is a medium-sized, nylon backpack designed for hiking and outdoor activities during the summer season. It features a zip closure, two pockets, a lightweight design, and a nylon frame material. The backpack is treated with insect repellent and is suitable for both men and women. With a durable canvas trim material, this hydration backpack offers ample space for storing essentials while on the go.