Effortless outdoor gear: The hydration pack features a bag design optimized for performance, built to support outdoor activities with a focus on practicality and comfort. Store more: Includes a variety of storage bags and compartments to organize all outdoor essentials and keep everything easily accessible during adventures. Designed for every run: Adjustable shoulder straps and versatile side pockets make the pack suitable for a range of body shapes. The breathable density mesh absorbs sweat and moisture without adding stress to your workout. Promote night safety: Safety reflective strips on the hydration package provide visibility in low light conditions and effectively warn passing vehicles to enhance safety during night travel. Key attributes Function: Hydration pack with multiple storage bags and compartments for organized hydration and gear. Compatibility: Adjustable shoulder straps and side pockets designed to fit a variety of body shapes. Size: Accommodates different body types through adjustable design; no fixed size stated. Material: Breathable density mesh panels to manage moisture. Performance: Bag design optimized for outdoor performance and convenient accessibility. Use scenarios Trail run or longdistance run: Carry water and essentials in an organized manner for quick access during the run. Night or lowlight training: Reflective strips enhance visibility to improve safety when running in lowlight conditions. Day hikes or multihour outings: Use the compartments to keep hydration, snacks, and small gear neatly arranged and easy to reach.