David Letterman, as shown in his famed Velcro suit.

Velcro History: How We Became Hooked On Hook & Loop

How Velcro became one of the most important inventions of the 20th century, despite simultaneously gaining an unfashionable reputation.

Recently, I spent a bit of time cleaning my messenger bag, which had an annoying problem — the pointy half of the Velcro was filthy, covered in ugly…