Blondo Brooklyn Waterproof Flats These ballerina-style Blondo Brooklyn Waterproof Flats ($90) are made of a super-soft waterproof fabric and, not only do they keep feet safe from rain, they also won't make them wet with sweat when it's humid outside. Image Source: nordstrom.com Blondo Brooklyn Waterproof Flats $90 from nordstrom.com Buy Now