"Mellow Out" is our message. It is embroidered on the 'Field Trip™', our most popular hat style with its 5 panel unstructured crown. Its build is derived from our nostalgia for vintage workwear hats. The timeless hats are made of soft, corduroy fabric and feature a fabric strap with brass metal clasp. Corduroy Fabric Fabric Strap with Brass Metal Closure. One Size Fits All. Earthy Tone: Pompeii Imported.