UltiClip is an option for most any holster that reduces the bulge and eliminates the obvious clip. In fact, you might just be able to not need a belt at all
UltiClip Advanced Holster - Tactical and Concealed Carry Products
Best Inside Waistband Holster
ULTICLIP XL - UltiClip
Your holster will be on its way to you within 5 days (usually less)! , This inside-the-waistband holster comes with the awesome Ulticlip attached but
Ulticlip Inside-the-Waistband Holster: Quick-Ship
Glock IWB/AIWB HAWG Holster with Ulticlip
UltiClip Product Review • Spotter Up
REVKEL Kydex UltiClip Holster for pistols w/Crimson Trace Laser. No Belt Needed - Tony's Restaurant in Alton, IL
SIG P365/ X RMR With Ulticlip 3 and Mod Wing Attachment Kydex Iwb Concealment Holster
Shultz UltiClip IWB Holster No Belt Needed - Gun Holsters, Magazine Carriers, and Tactical Gear
Amelia inside the waistband holster - Flashbang Holsters
Best option for belt-less carry - Ulticlip is unlike any traditional holster clip on the market. It clamps down hard and secures to your waistband,
Ulticlip 3+
ULTICLIP3+ - UltiClip
Patriotic Ulticlip IWB Holster - TacX Pro Gear
IWB Concealment Holster Detroit Holster 8 Mile UltiClip Version