Plus, they’re perfect for upgrading your most basic travel outfit. As a kid in the ‘90s, I lived in jelly shoes. Plastic flats and sandals in eye-popping, glitter-flecked colors ruled my childhood.

Jelly flip-flops are one of the moment's top shoe trends, riding on the wave of the resurgence in jelly shoes and flip-flops in general, as well as all things Y2K. The nostalgic footwear is getting ...