Commando Sells $38 Wool Panties as Shoppers Turn on Polyester

Commando's new wool panties retail for $38 — and they land exactly as consumer sentiment turns hard against polyester, the most produced fiber on the planet.

The Vermont-based basics brand, founded nearly 25 years ago by Kerry O'Brien, built its name on seamless, raw-cut nylon panties adapted from activewear fabrics. Now it's swapping synthetic for sheep. The new Thermaluxe wool French cut panty is available online and in select stores.

"Nothing can really replicate the technical aspects of wool, what it does naturally," O'Brien told Fast Company.

Why are shoppers turning on polyester?

The shift is measurable. Google Trends shows interest in "natural fibers" up 60% over the past year and up 140% over the past five years.

The backlash is loud, too. Abercrombie recently drew controversy over a mostly synthetic women's sweater marketed as a "wool-blend." Fashion creators tout natural fibers over synthetics on environmental and health grounds, and "polyester" has become an insult among Gen Z. Wellness and MAHA influencers have joined in, though a direct causal link between microplastics and sickness hasn't been proven.

Wool panties aren't new — wool-focused and niche outerwear brands have sold them for years. What's changing is that they're moving toward the mainstream, in a category where cotton has long dominated.

What does wool do that synthetics don't?

Plenty, according to Huipu Gao, PhD, assistant professor of textile development at the Fashion Institute of Technology. He credits wool with "moisture management, biodegradability, renewability, temperature regulation, and odor resistance" — properties that map directly onto underwear's demands.

"[Wool] is the next frontier," O'Brien said. "Everybody has a wool sweater. Everybody knows what wool is. Unfortunately, they have this idea that wool has to be chunky, scratchy, super warm, and thick." Like cotton, she argues, wool can be engineered into many forms.

Fiber fineness is the unlock. Liz Sargent, fibers professor at the Savannah College of Art and Design School of Fashion, explains that merino's fineness lets fibers "bend easily rather than poke the skin," making it feel "as soft as cashmere and as smooth as silk." Next-to-skin merino typically runs between 15.5 and 18.5 microns.

Why hasn't wool taken over underwear already?

Cost, mostly. Gao notes fine wool fibers are more expensive, and wool needs extra treatments to prevent pilling and shrinking in the wash — added costs that have capped its popularity in undergarments.

Processing is its own puzzle. Wolford, the luxury hosiery and intimates brand, launched a six-silhouette wool capsule with Australia's Woolmark in early October, and CEO Marco Pozzo described the engineering grind. It took trial and error to "find the right balance in the micron of the fiber and the twist" for a fabric soft enough against skin.

Dyeing compounded the problem. "Every sheep is different, like our hair, so the way they absorb the color can be very different," Pozzo said. Wolford rewrote its dye recipe to recreate its signature colors and "stabilized the material in a steam chamber" to prevent size shifts across cold, hot, or humid environments.

Why does a wool panty still contain synthetics?

Commando's panty is 96% wool and 4% elastane; Wolford's capsule uses one pure wool fabric and one with 15% elastane. Sargent notes underwear needs recovery, so "wool is often blended with or wrapped around a small amount of nylon or elastane."

O'Brien isn't apologizing for it. "[Elastane] is really a key ingredient to Commando, helping things stretch and be modulus against your body," she said, cautioning against ditching synthetics entirely: "Synthetic fabrics have given us a lot of benefits over the years in terms of technical performances."

She's still accelerating the natural pivot. Within the next year, Commando plans cashmere and linen lines, each blended with a fraction of elastane. Pozzo is tracking Wolford's wool sales to decide whether to add silhouettes — possibly including wool panties. The fiber's next fight for drawer space is already being scoped.