The Ultimate Direction SJ Ultra Vest 3.0 Race in Gunmetal Gray Blue White is a versatile hydration pack designed for trail running, hiking, and other outdoor activities. With more than 8 pockets and a lightweight design, this vest offers convenient storage for essentials while keeping you hydrated on the go. The zip closure and medium size make it suitable for both men and women, while the durable construction ensures long-lasting use in various seasons. Perfect for adventure enthusiasts looking for a reliable and comfortable hydration solution.