Mobius Sia Mid

$221 ~~$340~~ In stock

The Mobius Sia Mid is a strappy sandal with a hollow loop-shaped heel and a single band that forms the sole, heel, footbed, and upper of the shoe. The fiber-reinforced nylon heel is the strongest part of the shoe, while its open wedge shape keeps it incredibly light.

United Nude's launch product, the Mobius, was revealed in 2003 and has since become an icon in the world of design. The style was born from a conceptual development of the Mobius strip, a single-sided surface with no boundaries. Its distinct shape was inspired by transforming the frame of Mies van der Rohe's Barcelona Chair into a single band, uniting the upper, sole, footbed and heel into one infinite piece.

Standard fit
Heel Height: 60mm/2.4in
Nappa leather upper with tonal metal hardware
Leather lining
Leather footbed
Fiber-reinforced nylon heel
Rubber outsole

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Grace V. ★★★★★ Oct 22, 2026

Walking around in these all day was surprisingly comfortable — the hollow heel really does make the whole shoe feel lighter. The single-band design took a minute to get used to, but now I love how it wraps my foot.

Riley P. ★★★★★ Oct 21, 2026

I was a little nervous the single-band design wouldn't be comfortable, but the fiber-reinforced heel gives it surprising stability for an all-day wear. The way the heel loops into the sole makes walking feel unexpectedly smooth.

Emma ★★★★★ Oct 18, 2026

The hollow loop heel is such a clever design—it’s incredibly stable even when I’m walking on uneven pavement. The single band molding everything together makes them feel seamless and surprisingly comfy for a mid heel.