IWB Holsters (Inside the Waistband) means that you are wearing the holster inside the pants on the waistband. IWB holsters is a great choice for concealment. MTR Custom Leather adds some great features to our IWB holsters to ensure comfort for long wearing. Some features that comes on all of our IWB holsters are: sweat shield, leather re- enforce mouth, full coverage of barrel, gun specific details, trigger coverage, heavy duty nylon stitching, and high quality leather. MTR Custom Leather offers some additional features on some IWB holsters to accommodate your needs.