Lightweight hydration backpack for comfortable onthego hydration Lightweight and comfortable: Weighs only 0.14 kg, designed to hydrate without impacting workout performance. Breathable and moisturewicking: Made from a nylon and polyester blend with density mesh for improved breathability and waterwicking performance. Practical storage and organization: Multiple pockets and a large main compartment provide organized space for various items in a water backpack designed for cycling. Safety features for low light: Reflective strips on the shoulders and back, plus a whistle and survival accessories, for safer night journeys for hikers. 23 specific use scenarios Cycling training or long rides where lightweight gear and easy access to essentials matter. Hiking or trail walking in low light, with reflective visibility and survival accessories for added safety. Outdoor workouts or runs requiring compact, accessible storage and reliable hydration. Key attributes Function: Hydrationfocused backpack with multiple pockets and a large main bag for organized storage. Compatibility: Designed as a hydration vest/backpack suitable for cycling and outdoor activities. Size and weight: Lightweight at 0.14 kg with a compact, breathable profile. Material: Nylon and polyester blend with density mesh for breathability and moisture management. Performance: Breathing comfort, efficient waterwicking, and safety features to support extended activity and night use.