Key benefits Lightweight and comfortable: weighing only 0.14 kg, this hydration backpack is designed to stay unobtrusive during workouts and daily activities. Breathable, waterwicking performance: constructed from a nylon and polyester fabric blend with density mesh to promote dependable breathability and effective moisture management. Organized storage for onthego hydration: multiple pockets plus a large main bag provide orderly space for essentials, making it suitable for cycling and other outdoor use. Safe night journeys: safety features include reflective strips on the shoulders and back, a whistle, and survival accessories to enhance visibility and preparedness in lowlight conditions. Product details Weight: 0.14 kg Material: nylon and polyester blend Comfort and fit: lightweight design to minimize impact on performance Breathability: density mesh for airflow and comfort Storage: multiple pockets with a large main compartment for organized items Activity focus: hydration vest optimized for cycling Safety features: reflective strips on shoulders and back, whistle, survival accessories Use scenarios Cycling trips and long rides: keep hydration accessible with organized pockets and a comfortable fit that does not interfere with pedal movement. Hiking and night journeys: enhanced visibility from reflective strips, plus a whistle and survival accessories for added safety during early morning or late evening treks. Outdoor training and day hikes: ample space in the main bag and multiple pockets to carry belongings, while breathable fabric helps maintain comfort during extended activity.