OTTO CAP OTTO FIT 6 Panel Pro Style Fitted Cap, Best Fitted Cap in the World!, Key Product Features. Pro Style Profile - Deep-fitted and structured for a clean, premium look Vegan Wool Twill - Lighter and more comfortable than traditional wool Exclusive OTTO Side Logo - Signature branding for an authentic, premium finish 10 Sizes Available - You can find the perfect fit thats designed for you. Available sizes 6, 7, 7, 7, 7, 7, 7, 7, 7, 8 Upgraded Flex Bill Visor - Allows customers to shape it according to their preference. Wear it Flat for a modern street look or curved for a classic look Enclosed Back - Clean, fitted design for a streamlined look Standard Cotton Twill Sweatband - Provides soft, reliable comfort all day long