Crucial Concealment Covert Inside the Waistband Holster, IWB Holster, Ambidextrous, Fits Sig P365 Fuse, Kydex Construction, Matte Finish, Black 1413 The Covert IWB holster is a simple and effective way to carry inside the waistband (IWB). With an overall minimalistic design" this holster delivers necessary concealment without compromising comfort.