The Mattress Tuk is DeSantis’ latest creation for the well armed sleeper. It is made from thick Kydex(R) sheet and tucks conveniently between your mat- tress and box spring. The Mattress Tuk will accommodate just about any IWB holster fitted with a steel spring clip. We highly recommend using our Pro Stealth,, because it is AMBIDEXTROUS. The Mattress Tuk adjusts for height and also for cant (to some degree). Keep your friends close and your Mattress Tuk closer! Holster Not Included We highly reccomend use of this product with our Inside the Waistband Holster, #N87 Pro Stealth. This item can be located by searching by holster or accessory on the home page and then clicking on Inside the Waistband.