Abstract: An air cushion connected at least a cushioning element in a vertical stack configuration for absorbing both lighter and heaver heel impacts sequentially in a shoe mid-sole. The air cushion may be an air bladder with tying element, resilient pad or the combination thereof The fabrication method of the present invention includes the steps of blowing a melting inflatable bladder or tube together with a cushioning element in a blowing mold, inflating the melting inflatable bladder with air in high pressure, so as to form a bladder with a passage way that confirming the inner shape of the blowing mold, and blowing air into the bladder in a preset pressure; and thereafter sealing the passage way for forming an air cushion with multistage shock-absorbing assembly.