Kneepad/Elbow Pad Uniform Inserts, USGI Issue, NSN 8415-01-502-0520 Military-issue knee and elbow pad inserts for combat uniforms Set of 4 inserts: 2 kneepads, 2 elbow pads. One size fits all. Use with Army and Marine Corps issued uniform pants and jackets that have pockets in the knees and elbows for pads. Provides protection from rocks, gravel, concrete, and other hard objects. NSN 8415-01-502-0520