This bag is waterproof and can be used as a bike rack bag, backpack, and shoulder bag. It features large capacity that can meet your daily needs, great for cycling, commuting, hiking, traveling, and other outdoor activities.

Features:
3-in-1 design: This bag can be used as a bike rack bag, backpack and shoulder bag, great for cycling, commuting, hiking, traveling, and other outdoor activities.
Waterproof: High-quality PVC material and welded seams prevent water seeping into the bag, and the roll-top closure ensures better protection to keep your belongings dry.
Large Capacity: Main compartment includes a padded pocket for laptop, and a zipped mesh pocket for valuables; side mesh pocket for small items; exterior zipped pockets for other accessories.
Easy Installation: The new mounting system in the zipped pocket makes it easy to attach the bag onto the rear rack of your bike in seconds.
Hidden Straps: Thick mesh shoulder straps provide good breathability and comfort when carrying the bag. The reflective strip on one strap increases visibility and safety at night.

Specifications:
Material: PVC
Color: Black / Blue / Red (optional)
Size: Approx. 28 * 17 * 48cm / 11 * 7.1 * 18.9in
Weight: Approx. 1.3kg / 2.9lb

Package List:
1 * Backpack