Lightweight hydration backpack designed for training Lightweight and comfortable: This hydration backpack weighs 0.14 kg, providing a lowprofile, unobtrusive feel so it won't slow you down during workouts. Breathable and durable materials: Made from a nylon and polyester blend with density mesh for breathability and moisturewicking to keep you comfortable during activity. Easy hydration access and organized storage: A spacious main compartment plus multiple pockets keep hydration and essentials neatly organized and within reach while you move. Safety features for lowlight use: Reflective strips on the shoulders and back, a whistle, and survival accessories enhance visibility and safety during night or early morning journeys. Use scenarios Cycling workouts or commutes that require quick, onthego hydration without added bulk. Trail running or hiking in lowlight conditions, where visibility and safety features matter. Outdoor training days when you need reliable organization for fluids and essentials while staying lightweight. Key attributes Function: Onthemove hydration with organized storage for essentials. Compatibility: Designed as a lightweight hydration backpack for training and outdoor activities. Size and weight: Lightweight at 0.14 kg, compact design for freedom of movement. Material: Nylon and polyester blend with density mesh for breathability and moisture management. Performance: Lightweight comfort, efficient hydration access, and enhanced safety features for night use.