Sterkowski Rusty Hat 100% Combed Cotton Flat Cap for Men and Women

Sterkowski.com

Olive green color matches exactly, Smooth material appearance (combed cotton) matches the source's non-patterned look, Flat cap style is correct, Overall shape, fullness, and curvature are highly consistent with the cap in the video

Madison - Walrus Hats Olive Milton Wool Blend Ivy Cap - Driving Cap

Fashionable Canes

Olive green color matches closely, Smooth material appearance matches, Flat cap style is correct, Overall shape and fullness are very similar

Men's Flat Cap Wool Herringbone Tweed Vintage Classic 1920s

Happy Gentleman

Exact color match (dark olive green), Material (wool herringbone tweed) is consistent with visual texture in frame, Classic flat cap design and form factor match closely