- Prep Plaid 507Starting at $70.00
- Seamless Tropic 507Starting at $50.00
- USA Tropic 507 VentairStarting at $50.00
- Wool 507Regular Price $80.00 Starting at $56.00
- Tropic 507 VentairStarting at $50.00
Fine hats and caps are formed by using tools known as "hat blocks". These are often made of such things as wood or aluminum, and are used by hat companies to achieve consistent quality in the shapes of their styles. The number 507 refers to the number that was given to this shape years back in our history, and is now one of our most popular and recognizable flat cap shapes.