A new way to mark fabrics! This might look like regular triangular tailor's chalk, but it has a clever trick. The marks disappear from your fabric within 72 hours, or you can simply iron the marks away with a hot iron! If ironing your marks away, make sure your fabric can be ironed with a hot iron. This pack features three white triangular vanishing chalks. Comes in a plastic box to keep the chalks clean and prevent them from breaking.