- Versatile Use: Designed with reflective strips for enhanced visibility, this outdoor sports backpack is perfect for activities like running, night jogging, hiking, cycling, backpacking, and climbing. Stay safe and seen in low-light conditions. - Comfortable Fit: The ergonomic design of the hydration vest ensures a snug fit, featuring sturdy buckles and chest straps that make it easy to put on and take off. Enjoy maximum comfort and stability during your activities. - Durable Material: Made from high-quality, lightweight nylon, this hydration backpack is not only waterproof but also built to withstand the rigors of outdoor adventures. Keep your gear dry and protected. - Compact Size: Measuring 20 cm x 4 cm x 40 cm (7.87 in x 1.57 in x 15.75 in), this water reservoir maintains a compact structure without compromising on capacity, enhancing portability for your travels. Ideal for marathon training or long-distance hiking trips, this hydration vest ensures you stay hydrated without the bulk. Whether you're cycling on a trail or climbing a mountain, carry your essentials effortlessly while enjoying the great outdoors.