Kershaw's Amphibian is a diver's knife with corrosion-resistant 420J2 stainless steel. The skeleton handle design keeps weight down and is fitted with a co-polymer insert in the handle that aids in grip. The Amphibian blade is sharpened on both sides, one side has a plain edge, the other is partially serrated. The Amphibian includes a Kershaw diver's sheath, made from durable Kydex with a press-n-pull mechanism that secures the knife regardless of your position in the water. Also includes depth-compensating leg straps with adjustable quick-release buckles.