The small bag I carry is a basic kit of: X2 500Ml saline bags, 250 Ml Hespan, Epi-pens. X4 saline locks and lines, 4 tourniquets, lots of compressed gauze, 4x4's, X6 compression bandages aka Israeli bandages), cravats, bandaids, tape, shears etc X4 bags of Quick Clot combat gauze, Chest seals (Pneumothorax), Chest decompression needles, 4.0 silk, hemostats, X4 NPA's, PAM mask, SAM splint, BP cuff & Stethoscope, C-collar a ton of surgical gloves (non-latex) and a bunch of little other items like flashlights and chemlights.
The large bag is similar but much more expanded to include lots of snivel gear for the owies and booboo's. All of the families daypacks have a small grab and go first aid kit that's pretty darn comprehensive. I'm a big believer in carrying really good first aid bags and getting the training to use everything you have in the bag. I know it's not necessarily in the kit but having a good programmed HAM radio, fire starting materials, basic water supply, warm clothing and footwear is a small price to pay in room when you really need it. The last thing I want to have to do is be out in the middle of nowhere and have to make due should some become seriously injured.