Kershaw Needs Work Knife is a multipurpose knife and can be used both indoors and outdoors. Since the blade is made of Sandvik 14C28N stainless-steel, it can easily be used anywhere, due to its rust resistant quality. The polyimide handle ensures a good grip along with the ability to withstand extreme temperatures.The SpeedSafe assisted opening makes it easy to open the knife. The Locking Liner locks the blade in position while use, on opening the knife. Unlocking just requires you to press the spring loaded lock. The overall size of the knife when closed is 4 1/8 " and it weighs: 3.5 oz.