The NATHAN Running Belt Fanny Pack is a versatile and practical accessory for outdoor activities such as running, hiking, and other fitness pursuits. Made of durable nylon material, this hydration waist pack features an insulated design to keep your water bottles cool while on the go. The black color and sleek design make it stylish and functional for all your outdoor adventures, with a convenient zip pocket for added storage convenience. With its lightweight design of only 0.8 oz, this fanny pack is the perfect companion for keeping you hydrated and organized during your workouts.