FIT YOUR SIZE: Adjustable shoulder/chest straps. Fit chest sizes from 28" up to 49" chest size. Adjustable shoulder strap and waist strap to makes sure it doesn't bounce when you move.
ENOUGH CAPACITY: Large capacity of more than 7 Liters, Double-layer compartments fit your 13" laptop,clothes,iPad and phone. Two side pockets and one more little pocket for even more space.
COMFORTABLE AND FUNCTIONALLY: Professional backpack for camping, hiking, cycling and running. Airflow system design, keep your back cool and dry. Rather than two small pieces of fabric connecting the main body, the shoulder straps taper into a large piece. This contour create a really comfortable and snug fit.