The improvedstrelokmeshes.zip file you have requested: Shadow of Chernobyl / Skins / STALKERs / Improved Strelok Meshes for SoC - 5.11mb is not available. Perhaps try browsing all files for the game S.T.A.L.K.E.R. Shadow of Chernobyl and upload any files you want to share or are missing. This is the only information we could locate:
This files replaces Strelok's default face texture in all vanilla meshes with a new one based on his Call of Pripyat one and adds a new (unused for now) mesh that resembles the suit worn by Strelok in final cinematics.