I am of the opinion that most purchased first aid kits are gimmicks. Figure out what you use as far as first aid stuff goes and buy some of that. Add some things you rarely if ever use like some blood stopping pads.

My personal favorite for stopping bleeding is either a hanky or a towel of some sort. You probably already carry one in your pack for the more common uses so no need to add extra crap. I have a clean hanky and a pack towel in a baggy in both my fanny pack and my day pack.

Duct tape or electrical tape works every bit as good as white adhesive tape. I have some of both wrapped around a pill bottle that I keep my fire kit in.

I am not a fan of carrying stuff that one may not even know how to use effectively.

Irrigating a wound does not require anything other than a water bottle that you already have.

IMO, sterility on the first aid products is highly overrated. The environment you are in is not sterile so while clean is a good idea, sterile bandages probably don't serve a necessary purpose.