Material                       :  Canvas
    Height                         :  21cm
    Width                          :  18cm
    Thickness                    :  8cm
    Strap drop length         :  30-65cm(adjustable)
    Capacity                      :  can not put A4 paper
    Inner      :1 zipper pocket + 2 pockets
    Out side :
    Front :1 zipper pocket 
    (Manual measurement, error is inevitable,1 -3cm were within the normal range)