One day, my friend recommended this website to me: http://www.sunnny.com.hk/
It provides group buy from overseas website. Such a devil :P
This time I ordered this Herschel Little America canvas backpack (washed steel blue) from Moose Limited.
After the discount and transport fee, it's HKD920.
Because the material is heavy weight cotton, it's a bit more expensive, but also more durable.
I think it's heavier than that of another material.
Hard to capture the true color by iphone. Can refer the color to official website or search it by Google.