Hogue ex fo3
The perfect neck knife. Lightweight and slim, very sharp. The kydex sheath is excellent too (tho I am usually not a big fan of kydex sheaths- I prefer leather). Personally I don’t believe the so called neck knives with a full size handle and a weeny blade do the job: they are not comfortable to carry, around the neck, especially if you’re scrambling around or carrying a big pack and that big handle gets pushed against your chest.