LUYISABER This ultra-lightweight backpack is perfect for trail running, long runs, hiking, walks, and cycling. Despite its lightweight design of only 160g, it offers both storage capacity and stability. ◎ Features Ultra-lightweight 160g: Reduces fatigue during long runs and races. Front storage: Allows quick access to soft flasks and energy gels. Back storage: Compatible with hydration systems for peace of mind on long runs. Stable design: Fits the body comfortably and doesn't bounce, even while running. The width of the waist adjustment can be adjusted. Emergency whistle included: Provides a safety feature. Excellent breathability: Mesh material prevents stuffiness. ◎ Product Specifications Weight: Approximately 160g Color: Black Note: The white photos are uploaded for better visibility. The actual color is BLACK. Capacity: Front pockets (for soft flasks and storage), back (hydration compatible) Unisex ◎ Recommended Points Suitable for races and everyday training Comfortable fit that minimizes bouncing Includes a whistle for emergencies Lightweight & simple design for easy use ◎ Search Keywords #TrailRunning #TrailRunningBackpack #Hydration #SoftFlask #UltraLightBackpack #HikingBackpack #Outdoor #Rogaining #Cycling #PistBike #RoadBike #CrossBike