Features:
Mesh design for shoulder belt and backside， lightweight and cool.
The backside of this backpack has extra padding and breathable cloth for maximum support and comfort.
Two mesh side pockets outside，convenient for you to put your bottles， paper towels， umbrella etc.
Three small pockets and a key hook inside to store some small stuff like key， purse， cell phone etc.
Two buckle belts (chest !#!amp!*! waist belt) to fix more firmly.
Zipper with double sliders and handle design， easy to carry and use.
Reflective stripes will make you safer in low visibility conditions.
Comes with a detachable 2L water bag inside.
Velcro inside to fix the water bag on its position.
Water tube can go through both left !#!amp!*! right shoulder straps.
Made of high-quality safe non-toxic material， durable for long-time use.
Professional backpack special for bicycle lovers and walkers.


Specifications:
Color: Black
Water bag material: EVA
Drinking tube material: PVC
Backpack material: 420D nylon
Water bag size: 34.5 * 17.7cm / 13.6 * 7.0in
Drinking tube length: 106cm / 41.7in
Water bag and drinking tube weight: 127g / 4.5oz
Backpack size: 21 * 10.5 * 40cm / 8.3 * 4.1 * 15.7in
Total weight: 375g / 13.2oz

Package List:
1 * Bike Backpack with 2L Water Bag