🎬 Useless Fashion Facts with Cass: The Zipper Edition Did you know the modern zipper is actually a Canadian invention? 🇨🇦 The concept first appeared in the 1890s, thanks to Whitcomb L. Judson, but early designs barely worked. It wasn’t until Gideon Sundback, a Swedish-born engineer working in Canada in 1913, that the interlocking zipper we know today was perfected. Smooth glide, interlocking teeth, satisfying zip… basically, the reason your pants stay up! And those letters you see on your zip