The humble triangular bandage seems to be absent in many modern first aid kits but I would argue every IFAK should have at least one due to its versitility
Most people know of its ability to provide support to injuries as a sling
But it can also be a wound dressing and simple narrow or broad bandages that can also be used to immobilise limbs by securing to splints
By forming a donut shape to allow bandaging over for protruding objects in a wound
Bandaging awkward areas such as the head and hands
As its a simple cotton triangular cloth it also can be worn as a bandana, used to cover a water bottle when filling from a water source, hobo bag and cut into pieces for making char cloth etc etc
You can see some of these uses in this video
So make sure you have one in your IFAK and maybe consider carrying one in your EDC even if only as a hankerchief
Take care
Roo