This running vest with a water bladder pack is designed for comfort, durability, and practical onthemove storage for trail and fitness activities. Comfort and durability: Sweatwicking airflow mesh and tearresistant fabric keep you cool and protected during long sessions; lightweight back panel enhances ventilation. Smart storage and hydration: Adjustable straps with quickrelease buckles; dedicated phone holder; drawstring pocket; zippered pocket; water bladder sleeve; breathable back panel for secure, hands organization and hydration. Visibility and safety: Reflective strips improve visibility in low light; lightweight design stays snug during intensity activities like running or cycling. Fit and compatibility: Unisex design for men and women with adjustable torso sizing; suitable for adults and athletes; fits standard 2L water bladders. Versatility and performance: Ideal for running, hiking, cycling, camping, mountaineering, and fishing; keeps essentials secure without hindering movement. Use scenarios: Trail run or training: keep your phone, keys, and energy gels within easy reach while staying hydrated. Day hike or camping trip: compact storage for snacks, a map, and a light layer with a hydration reservoir ready. Evening cycling or fishing: reflective strips enhance visibility while the vest stays close to your body for comfort and freedom of movement.