Do the Math

Clean lines and striking silhouettes? The limits do not exist.

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Dia crossbody clutch by OAD, $295.
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OAD designer Sydney Suh-Lee started work on her new line this year with two principles in mind: geometry and function. The Parsons School of Design graduate banked a decade of experience in the fashion industry before branching out with her own brand, and the problems that OAD solves—with flair!—prove that it was time well spent.

OAD bags are simple yet stunning—and practical, too. Oh, and about that name? The letters represent the geometry that inspires all her designs: O for circle, A for triangle, and D for semicircle. And there you have it.

Dia True Black, $295; Prism color range, $495 each; all

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