I carry an IDF pressure bandage in my back pocket as part of my EDC gear. Have more with first aid kit and gloves in car and have taken a trauma first aid class.
I have two trauma kits in my car which include chest seals, Quick Clot bandages, and a SWAT-T tourniquet. If you pack it right it’ll all fit in an 8x6x3 kit.
One is loose, the other is packed in my “Go” bag. There’s a few other goodies in there as well.
Doesn’t take much to put one together. Learning the skills to use them properly isn’t that big a deal either.
L