C4 Naifu knife features an innovative and ergonomic design, with a total length of 20.4cm and a blade length of 9.4cm. The handle and the sheath are manufactured in recyclable POM, a very tough and auto-lubricating material with excellent mechanical properties and low water absorption.

C4 Naifu has a locking system between the knife and the sheath which makes for an easy extraction and insertion.

The blade is inserted all the way throughout the length of the handle making it extremely sturdy. C4 Naifu blade features a shaft remover and protrudes out from the back of the handle so that it can be used as a light hammer. A very important feature on the C4 Naifu knife is that the blade is machined to create a razor cutting edge whose geometry greatly increases its cutting and penetrating effect.

C4 Naifu knife comes with two rubber straps with stainless steel buckles for use on the arms or legs. The sheath also features two holes on the bottom so that an additional elastic can be used to hold the knife in position.