Green Humboldt Classic Necktie is great for the next formal event you attend. The plaid pattern will coordinate well with your favorite suit, tuxedo, or dress shirt. Represent Humboldt with our Humboldt Classic Necktie. Featuring our signature Humboldt Treelogo, as well as a redwood tree, this classic necktie has just the right mix of sophistication and fun. It's made of 100% woven polyester making care a breeze. Formal California Clothing.