Squared-Toe Slingback, Low Block Heel
A slingback on a low block heel, squared off at the toe. It is the shape that looks modern now and looked modern a decade ago, which is usually a sign it will keep doing so.
The heel is low and blocked rather than tapered, so the weight sits under the foot instead of balancing on a point. The toe is squared, which sharpens the whole line. An adjustable buckle at the strap lets the fit be set rather than guessed at, and it stays set through a day of walking. Inside, the cushioned footbed and arch support are doing the quiet work that decides whether a shoe gets worn twice.
It reads formal enough for work and relaxed enough for a weekend, which is a genuinely useful place for a shoe to sit. Wear it with trousers cropped at the ankle so the slingback is visible, or with a skirt when the season allows. Practical is not the same as plain.