Vanaheimr Outdoor Hiking Cycling Foldable Backpack Lightweight Multifunctional Large Capacity Casual Backpack 1. Material: Oxford cloth + polyester 2. Suitable for gender: unisex 3. Function: lightweight, expansion, load reduction 4. Weight: about 240g 5. Size: unfolded about 31 x 16 x 44cm, folded about 30 x 4 x 19cm 6. Note: shipped only the backpack, no other items are included Features: 1. Made of waterproof Oxford cloth, tear-resistant, lightweight and durable, wear-resistant, scratch-resistant 2. Compact and lightweight, the backpack adopts a foldable design, easy to store and carry, does not take up extra space 3. Breathable mesh shoulder straps design, disperses shoulder pressure, effectively relieves fatigue, no fatigue for a long time, making the journey easier 4. Reflective strip design protects you from traveling at night, and the elastic hanging design on both sides of the bag makes it easy to carry trekking poles 5. The top handheld webbing makes it easy to carry, and the shoulder straps can be adjusted according to your height 6. Sturdy double zipper design, smooth closing without jamming, backstrap stitching reinforcement, meticulous workmanship 7. The backpack is equipped with an elastic cord that provides expandable storage space for extra gear and essentials