The HYP-MPU was initially designed for the Special Operations and SWAT communities that needed a knife small enough to strap onto the forearm or tucked in a boot. A skeletonized handle has attachment holes which offer a lighter/slimmer knife. This utility blade makes for a great neck, dive and multi-purpose knife. Joggers like it because it will not leave rust marks from respiration when carried around the neck. The knife is offered in a titanium construction and in 440C stainless steel. A kydex sheath and Tek-Lok is included and detachable handles are available MPU-SS Specs: Material : 440 stainless Weight : 3.6 oz Weight w/Sheath: 6.3 oz