Hydration and storage: The vest has a main compartment capable of storing a 1.5L water bladder or cleaning and care equipment. It also provides ample space for a phone, snacks, and other items, making it suitable for use as a compact travel backpack. Material and environmental: Made from strength, lowdensity polyethylene PE material. The fabric is durable and offers good breathability for long wear during activities and travel. Night safety: Features reflective stripes on both sides to enhance visibility and safety during nighttime outdoor activities. Straps and stability: Constructed from quality nylon with reinforced straps and an antifall design to provide stability during movement. Practical use scenarios: Running and endurance workouts: Stay hydrated with an accessible 1.5L capacity while keeping essential items close at hand. Hiking and outdoor exploration: Durable construction and ample storage for phone, snacks, and small gear, with stable, reinforced straps for comfort on uneven terrain. Nighttime runs or commutes: Reflective detailing improves visibility for safer activities after dark.