Ugg’s Otzo clog spotlights Nuyarn wool and lower-impact materials

Ugg’s Otzo clog is the kind of product that turns a materials story into something you can actually wear on the street. The clog, which debuted earlier in 2026, pairs a nubuck upper and contoured EVA footbed with a wool jersey lining made using Nuyarn technology, then dresses the whole thing in the easy, elevated silhouette Ugg keeps pushing as an everyday slip-on.

The details matter because they move this out of the abstract. Retail listings add a leather and Responsible Wool Standard wool jersey lining, plus a peppermint-based anti-odor treatment and an outsole with 30% FSC natural rubber. That mix is doing a lot of work at once: comfort, wear resistance, odor control, and a lower-impact materials story that still reads polished enough to sit next to denim, tailoring, or wide-leg sweats without looking like a hiking castoff.

Nuyarn is the real plot twist here. The New Zealand-based technology, developed by TMC Ltd., uses a twist-free spinning method that drafts superfine merino around a performance filament, creating a yarn meant to feel more like technical apparel than old-school wool. Nuyarn says the process uses 30% less raw material and spins 16.7 times faster than traditional spinning. Other materials coverage puts energy use at 73% less, and ODLO has said the technology can cut energy consumption by 25% across the supply chain when paired with centralized, vertical operations. That is the difference between a nice sustainability line and a manufacturing case that actually sounds scalable.

What makes the Otzo notable is not just that Ugg used wool. Brands have done wool forever. It is that Ugg is borrowing a performance textile usually associated with outdoor layers and activewear, then dropping it into a lifestyle shoe meant for everyday rotation. That matters because the shoe market is full of products that promise lower impact but still fall apart, stay wet, or feel like a compromise. Nuyarn is trying to solve for all of that at once with claims around durability, dry time, stretch, and weight, and Ugg is betting that those claims can sell just as well in a clog as they do in a base layer.

The Otzo does not prove the whole next-gen fiber conversation is solved. It does show where the serious action is: not in glossy sustainability language, but in whether a brand can put a material through real product design, real retail specs, and real wear. On that front, Ugg’s clog is a more convincing test than most of the category’s nicer-sounding experiments.