Bought this case for an F-style mandolin (Harley Benton HBMA-100 VS) and was concerned that it might not fit into the case. However, I am very pleased with it.
When you first put the mandolin into the case, the molding of the inner cover appears 'wrong', like it is too tight or misshapened. However, it is actually perfect as it fits neat on top of the neck, keeping it in place during transport. I would highly recommend this case.