National Zipper Day

Celebrated on 04/29/2026

Quick Fact

National Zipper Day is celebrated on April 29th, the birthday of Gideon Sundback, who improved the zipper design in 1913. Before zippers, people relied on buttons, hooks, and laces, making dressing a much slower process. Today, the global zipper market is worth over $10 billion annually.

Origins and Establishment of National Zipper Day

The zipper's journey began with Elias Howe's 1851 patent for an "Automatic, Continuous Clothing Closure," but it wasn't until Whitcomb Judson's 1893 "Clasp Locker" that the concept gained traction. However, Judson's design was unreliable. In 1913, Swedish-born engineer Gideon Sundback improved the design with interlocking teeth and a sliding mechanism, creating the modern zipper. National Zipper Day was established to honor Sundback's birthday, April 29, and his contribution to fastening technology.

Evolution and Modern Commemoration

Initially used for tobacco pouches and boots, zippers gained popularity in clothing during the 1930s when children's clothing manufacturers adopted them for easy dressing. By World War II, zippers were standard in military uniforms. Today, National Zipper Day is celebrated with educational events at museums, social media campaigns highlighting zipper history, and promotions by fashion brands. It also serves as a reminder of the zipper's role in accessibility for people with disabilities.

Facts & General Observations

• The word "zipper" was coined by B.F. Goodrich in 1923 for rubber boots with the fastener; the name stuck.
• A single zipper can have up to 200 teeth, and the global production of zippers exceeds 7 billion units per year.
• The longest zipper ever made was over 2 miles long, used in a mattress cover.

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