G10 is a laminate made from layers of fiberglass cloth soaked in epoxy resin and compressed under heat. It is hard, dimensionally stable, completely unaffected by water, and it is the default handle material on modern working knives.
It does not absorb moisture, does not swell or shrink with humidity, does not rot, and resists most solvents. It is stiff and strong enough to be used thin, and it takes texturing extremely well, which is where its grip comes from.
Machining or peel-ply finishing gives it anything from a near-smooth surface to a coarse texture that stays grippy with wet or gloved hands.
Aggressive G10 texture eats pocket linings and can be uncomfortable in a bare hand over a long working session. It is also brittle in the sense that it chips rather than dents if you drop the knife on concrete.
Care is trivial: soap and water, a brush for the texture, and nothing else. Compare Micarta, which is warmer in the hand and develops a patina where G10 stays exactly as it was.
The term is not academic here. 264 of the products currently on our shelves describe this feature in their own manufacturer specifications, across all nine brands we stock. Examples in stock right now include Gerber Terracraft Fixed Blade Green, Buck Alpha Guide Elite Black, CIVIVI Aratra Fixed Blade Black.
Everything below is pulled live from the catalog, so what you see is what is actually in the Woodlawn warehouse today.