If you are an outdoors type, rather than a glamour camper, you will be unwilling to carry even one gramme more equipment than necessary (I’m told the SAS trim the handles on their toothbrushes to save weight).
Today’s invention is a new sheath for one’s camp knife which takes this into account.
This is made of strong plastic and has the sides omitted, thus protecting the blade whilst lessening the user’s load.
The added advantage is that if you need a tool to eg chop sticks, these can be inserted into the gap under the sheath (via the hinged flap (blue)).
The knife can then be struck hard on its pommel, eg with a rock, forcing the blade to guillotine whatever it comes in contact with.