Sturdy leather, buckle-on type (no pins). The attachment rings on your case are either oriented parallel to each other, or in line with each other. We usually stock these in black; dark brown may be available by special order.
If rings are parallel to each other and crossways to the length of the handle, you need the simpler handle with in-line buckles.
If rings are in line with each other and with the length of the handle, you need the handle with crossways buckles.