Machine blocked hat bases with a shallow crown and brim larger at the front 8cm tapering off to 6cm at the back. The blue variety has a 10cm brim all around. All covered shapes have a head fit sewn in, and the black ones also have a hat elastic. The matte black variety has a band attached around the crown that needs finishing at the back (add a flower, bow or veiling etc.).
Almost a finished hat in one piece, just trim and go or cover the buckram shapes as you see fit (though they are neat enough to use as is.