The wallet material is heavy duty cotton (duck) canvas (or 400 denier duck weave) outside skin with ¾ x 4” strip Velcro for safe closure Inside: double lined water proof supple polyester fabric. Center coin pocket with zipper, clear plastic window I.D. slot, generous 9” x 4” slot for dollar bills.Two additional credit card slots 3/8” black marrow finishing around all edges, and one center white polyester front panel for imprinting. Overall dimensions when closed: 3-1/4 x 4-3/4” x 3/8” thin, totally flexible for pocket comfort!