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| Darn Tough✕ Merino wool socks (blended with nylon for durability) made in Northfield, Vermont, with a lifetime guarantee. | IAFIL✕ Spinner of natural-fiber yarns in cotton, silk, linen, cashmere and alpaca for knitting and weaving. | Icebreaker✕ Merino outdoor and base-layer clothing; some fabrics blend merino with nylon, lyocell or elastane. | Sheep Inc.✕ London knitwear label using traceable, ZQ-certified New Zealand merino from regenerative sheep stations. | |
|---|---|---|---|---|
| Type | Brand | Mill | Brand | Brand |
| Location | Northfield, Vermont, US | Milan, IT | Auckland, NZ | London, GB |
| Fibers | Merino | Cotton · Silk · Linen · Cashmere · Alpaca | Merino | Merino |
| Makes | Socks | Fabric & yarn | Base layers, Tops & tees, Underwear, Socks, Outerwear | Knitwear, Tops & tees |
| Services | — | Spinning | — | — |
| Min. order | Not stated | Not stated | Not stated | Not stated |
| Certified | None listed | Masters of Linen | ZQ Merino | ZQ Merino |
| Natural | Not 100%. Some blends | Not 100%. Some blends | Not 100%. Some blends | Not 100%. Some blends |
| Founded | 2004 | — | — | — |