cooling jacket - a lot of cool air in the jacket

The inner part is glue to jacket inner part.then can cut the hole of the jacket.
the is assemble like the picture and video.

control the speed of the motor using the dc motor speed controller that attach to the power supply witch is I using m12 milwaukee battery.

you will need:-
- m5 bolt 16 pcs
- 12v dc motor or that is call 775 motor if not mistaken
- pwm speed controller
- wire
- power supply
- 4 inch fan blade i buy from electronic shop

if you are also using m12 milwaukee bat