What is this sheath/strap combination called? Having no luck searching : r/ knives

Got a knife for Christmas does anyone know what the two strings are for? : r /Bushcraft

BLACK GREEN MICARTA SMOOTH 23472 CASE

The Physics of Knives 101 - HubPages

Benkey Damascus Folding Knife, Sharp VG10 Core Damascus Steel Pocket Knives with Natural Wood Handle, Quality Leather Sheath, Ball Bearing, Liner Lock, Lightweight Pocket Knife for EDC Men Women

Handmade Leather Knife Sheath Fits 5 Blade, Hand Crafted, Tooled, Made in USA, Gift for Him, Genuine Veg Tan Leather

What is this style of handle/ sheath combo called? Where the handle and sheath fit together to look like one piece of wood? Not my work, just a reference pic. I just

Tactical, Combat, Survival Knife Sheath Accessories by Jay Fisher

KNIVES - ACCESSORIES - FISHING

Is this worth $500 or am I overpricing? : r/knifemaking