One case contains 17 sheets x 4 bags = 68 sheets. Prevents leakage from the back "Back Leakage Prevention Three-Dimensional Gather" to stop urine and soft stools Easy to put on "Center-Split Tape" that can be fastened perfectly to fit the body shape * By cutting the center perforation and fastening the upper and lower tapes in a cross, it is easier to fit those with thin legs and waists. Easy to see the center of the diaper Align the center of the diaper with the center of the body with the "center line" for correct application