Vivaia review: We love the brand's boots, flats, and heels, but the sizing scheme is complicated. Here's what you need to know.

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Vivaia is a sustainable footwear brand that entered the scene in 2020 with a lot to prove. At this point, most people were well aware of their options for the best flats from brands like Rothy's, Everlane, and Allbirds. Nevertheless, Vivaia (pronounced "v/i/-VAY-yah") carved out their own corner in the sustainable shoe market with colorful, comfortable dress shoes ...