"12 medium (3-1/2"d x 3/8"w) in each of 4 colors and 8 large (6-1/2"d x 3/8"w) in each of 4 colors. Total of 20 pieces. "The perfect rubber band makes a big difference. We have found the perfect ones for closing journals - just the right thickness, size and stretchiness for the job, plus now they are available in great colors.""