• 【Ultralight 3D Mesh Design】This running backpack weighs only 120g and features a 3D polyester mesh back panel with curved shoulder straps that effectively distribute pressure for comfortable long-distance wear.
• 【Multi-Compartment Storage System】Internal hydration bladder compartment supports external 500ml soft water bottles, with zippered main compartment and elastic side pockets for phones, energy gels and running essentials.
• 【Integrated Safety Features】Built-in emergency whistle and reflective webbing design enhance visibility and safety during nighttime or adverse weather outdoor activities.
• 【Secure Adjustment System】Adjustable chest belt buckle works with smooth zippers and drawstrings to prevent bouncing during intense movement and accommodate different body types.
• 【Water-Resistant Durable Construction】Nylon fabric construction with reinforced seams provides water-repellent performance to resist outdoor rain and sweat during cycling, running and hiking activities.

Specifications:

• Material: Nylon, Polyester
• Backpack Capacity: Under 20L
• Phone Fit Size: 6.6 inch
• Back Panel Material: 3D Polyester Mesh
• Safety Features: Emergency Whistle, Reflective Straps
• Closure Type: Zipper, Drawstring
• Adjustment System: Adjustable Chest Strap