I'm looking for a holster (Shoulder holster?) that I may wear while I'm running. I would prefer if; *It is made out of a washable material, something that moisture and salt won't affect, unlike leather. *It doesn't require a belt to hook on to. *VERY minimal, something I may hide under a shirt. Other holsters would be considered, but remember that I don't wear a belt, and don't plan on wearing a belt.