5 Merino Wool Brands for Men, and the ZQ Certification Controversy

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Merino wool brands lean hard on "ethically sourced" and "animal welfare certified" language, and until recently that mostly meant one certification: ZQ, run by the New Zealand Merino Company. In 2026, a PETA Asia investigation that went undercover at 11 ZQ-certified farms and shearing sheds documented workers beating, kicking, and stomping on sheep, and slamming a sheep's head against wood — footage serious enough that four shearers now face criminal charges and the certifying body rebranded from "ZQ" to "Zentera," dropping its ethical-wool claim entirely. That changes what "ZQ-certified" is worth as evidence, and we're not going to gloss over it just because it complicates two well-known brands.

The short answer: choose Duckworth for fully source-verified, single-origin Montana wool with no ZQ dependency, or Unbound Merino for Responsible Wool Standard-certified, non-mulesed Australian wool at a lower price point. Want a UK/US traceable option or a well-known name with a caveat attached? See the full comparison below.

How we checked each brand

The Responsible Wool Standard (RWS) and Woolmark are separate certification schemes from ZQ/Zentera, run by different organizations (Textile Exchange and The Woolmark Company respectively), and neither was implicated in the PETA investigation. We call out specifically which certification each brand relies on rather than treating "certified wool" as one interchangeable label.

1. Duckworth

Duckworth grows its own wool on a single ranch in Dillon, Montana, rather than sourcing from third-party farms — its "Sheep to Shelf" process means there is no external certification scheme to evaluate at all, because the company controls and verifies every step itself, start to finish.

Prices run roughly $40–$150 across base layers, shirts, and socks.

Best for: the simplest, most verifiable single-origin wool supply chain on this list.

2. Unbound Merino

Unbound Merino sources wool certified to the Responsible Wool Standard (RWS) — an independent audit of animal welfare and land management, separate from ZQ/Zentera — from non-mulesed Australian farms, and its wool additionally carries Woolmark certification for fiber quality.

Pricing runs about $45–$95, generally the lower end of the merino brands here.

Best for: RWS-certified merino at the most accessible price point on this list.

3. Ridge Merino

Ridge Merino sources non-mulesed wool from Australia and New Zealand, is Woolmark certified, and its products carry OEKO-TEX Standard 100 testing on the finished fabric. As of early 2025 the brand states most, not yet all, of its wool is RWS-certified, with certification of the remainder in progress — worth knowing if full RWS coverage specifically is what you're checking for.

Prices run roughly $30–$140.

Best for: Woolmark and OEKO-TEX certification with RWS coverage still completing.

4. Wool&Prince

Wool&Prince partnered directly with The Woolmark Company to build a fully traceable supply chain back to specific Australian farms — a partnership focused on traceability and fiber quality rather than the ZQ/Zentera welfare scheme. The brand is best known for wool dress shirts and polos rather than base layers or activewear.

Shirts and knitwear run about $98–$148.

Best for: dress shirts and polos with farm-level traceability, not activewear.

5. Icebreaker

Icebreaker's core sourcing claim runs through ZQ (now Zentera), the same certification scheme where a 2026 PETA investigation documented sheep abuse at multiple certified New Zealand farms, leading to criminal charges and the certifier dropping its "ethical wool" claim. Icebreaker states 81.2% of its wool now comes from the newer ZQ+ regenerative-farming tier, which is a real distinction from standard ZQ, but neither tier was exempt from the findings at the implicated farms.

We're including Icebreaker because it's one of the most recognized merino brands and dropping it silently would leave the gap unexplained; if the welfare claim behind the certification is the reason you'd choose this brand, that claim is currently in serious question industry-wide, not just for Icebreaker specifically. Prices run about $60–$160.

Best for: shoppers who want the most recognized merino name and are comfortable weighing the certification controversy themselves.

Which one should you actually buy

• Want the simplest, single-origin supply chain: Duckworth.
• Want RWS-certified merino at the best price: Unbound Merino.
• Want Woolmark and OEKO-TEX certification: Ridge Merino.
• Want a wool dress shirt with farm-level traceability: Wool&Prince.
• Want the most recognized name and can weigh the ZQ/Zentera controversy yourself: Icebreaker.

For lighter-weight options beyond wool, our bamboo clothing brands roundup and sustainable t-shirts for men roundup cover cotton and bamboo alternatives. For a broader wardrobe view, see our sustainable men's clothing brands roundup.