Contents of my EDC trauma IFAK:
Tourniquet: https://tacmedsolutions.com/products/sof-tourniquet
Hemostatic gauze (4yrds, xray z-fold): https://www.narescue.com/all-products/combat-gauze-z-fold-hemostatic.html
Compressed gauze (4yrds): https://www.narescue.com/nar-responder-compressed-gauze.html
Gloves: https://www.narescue.com/black-responder-glove-kits.html
Safety Cutters: https://www.narescue.com/benchmade-personal-safety-cutters.html
Twin compact chest seals: https://www.narescue.com/hyfin-vent-compact-chest-seal-twin-pack.html
...and 1 Band-aid for kids (I use a wad of electrical tape).
I wear it ankle in fall+winter (straight leg jeans, not even boot cut), back pocket or inside boots spring+summer.