"Expandable capacity: The dimensions of the backpack with rolled top are 11.42" x 7.28" x 21.65" (30L). Maximum size when expanded 11.42" x 7.28" x 24.61" (35L). Plenty of room for all daily essentials.
Multifunctional organizer: Inside the main compartment, there are two mesh pockets for items like keys and USB cables. In the drawstring mesh pocket on the left side, a water bottle or umbrella can be stored. The elastic strap on the front helps secure items like a hat, jacket, and soccer ball. A waterproof zippered pocket on the front provides additional storage.
Waterproof: The backpack and zippers are made of waterproof material, effectively protecting your belongings from rain.
Three carrying options: The backpack can be attached to a bike saddle, with the buckles on both sides locking the rolled top. You can adjust the chest buckles to reduce pressure when carrying the backpack over the shoulders. With the handles, the backpack can also be used as a tote bag.
Innovative design: The backpack features a 3D recessed design that improves air circulation and heat dissipation. A valve on the left side can release air inward to keep the backpack flat."
