1. Material: polyester 2. Capacity: folded: 15L, unfolded: 25L 3. Dimensions: folded: 31 x 12 x 37 cm, unfolded: 31 x 12 x 57 cm 4. Weight: about 920 grams/piece 5. Large-capacity design to meet daily travel needs 6. Comfortable fabric, more breathable 7. Adjustable buckle design, easy to use
