• This bag is specially designed for convenient hydration during exercise
• The water bag compartment can be used with 2L water bag (not included)
• S-shaped shoulder strap is close to the body, evenly stressed, and relieves shoulder fatigue
• Attachable mesh pocket design, which can place helmet/coat or other items, hidden storage at the bottom, more convenient to use
• Mobile phone compartment supports mobile phones under 6.8-inch 
• Snack compartment is convenient to replenish energy at any time
• Reflective strip design can increase travel safety at night
• Lightweight and comfortable to carry

Specifications:

• Size: 30 * 40cm
• Capacity: 5L
• Weight: 0.4KG
• Material: nylon
• Mobile phone compartment: suitable for mobile phone of 18cm in length and 7.8cm in width