Natural shell buttons, approximately 11mm across and ranging from about 0.5mm to 1.5mm thick. As you can see, these are irregular and most are not perfectly flat. If you are working with a lightweight fabric and would prefer your buttons on the thinner side, feel free to indicate above.
I take care to pick the best available buttons for each order but, since shell is a natural material, there may be slight imperfections and variations in colour. Please wash with care - avoid using acidic cleaners and tumble-drying.