This is a DeSantis Gunhide Belly Band known as the 061, model 061BJG4Z0.
The Option 4(TM) is a comfortable" flexible" and breathable holster that offers numerous ways to carry small to medium pistols or revolvers. Your weapon or weapons can be carried in a neutral or forward cant low on the hips. Available in Black Only.
Features:
Comfortable, flexible, and breathable holster
Offers 4 different slots to carry your firearm with either neutral or forward cant
Comes in 5 different sizes