Byrna Holster Concealed - HD/SD. The clip-less sleeve holster from Byrna is made of non-slip material. The exterior material adheres to your skin with just a little pressure and is waterproof. The middle layer that conforms to the shape of the Byrna launcher is made of closed-cell foam. The launcher is shielded by the final, extremely robust layer. Launchers with accessories can be used with the holster.