Park & Diamond foldable bike helmet looks and feels like a baseball cap - GrumpyFoot
Straw Hat Bike Helmet - Etsy
DOT Daytona Slim-Line Skull Cap - Hi-Gloss Black
Amazon.com: Motorcycle German Style Half Face Baseball Helmet, DOT Approved Cap Half Shell Baseball Cap Helmet+Face Mask Retro Open-Face Helmet with Quick Release Buckle for Cruiser Moped Scooter-Bright Black||M : Automotive
Homyl Motorcycle helmet, summer baseball cap, protective helmets, tropical helmet, bicycle helmet for men and women, black with pattern : Amazon.de: Sports & Outdoors