Bulldog''s Extreme series holsters have four wall construction. The outer wall fabric is heavy-duty, water-resistant nylon, and the inner wall has a vinyl vapor barrier with deluxe padding and a soft, scratch-resistant fabric. It has a spine protector to keep gun sights from tearing the inner lining. Extreme series holsters feature an ambidextrous clip and belt loop. This model has a black finish and is compatible with most revolvers with 2-2.5" barrels, such as Ruger SP 101.