Summer shirt cooler

For the ridicules hot summer days i made a simple but very effective shirt cooler.

A very basic design printed in PLA allows to mount a 80mm 12v pc fan.
3x 18650 cells (2000-2500mah) are combined with a BMS.
This will power the fan for 10 to 12 hours non stop and can be recharged with a 12.6v adapter.

Just attach it to your pants, secure your shirt and power it up.

here you will find the full building instructions and demonstration.
https://youtu.be/X0Uy_ga5pIA?si=LaUXZ-Yk2PHeVvd0

Hope it will be helpful for people who cant stand the hot temperatures.