Leo James Designs Hand-block their Hats. Hand-blocked hats are widely considered to be more durable and unique than the Machine-made counterparts. Leo James Designs make a variety of hat styles with ease, the type of hat that works best for you depends mostly on your facial structure.Leo James Designs does not have a One Size Fits all Policy. Leo James Designs supply a range of Sinamay Hats, Fascinators and Hair Accessories to suit your personal taste.