on stairs, i'd lean 100% wool. with only 30% wool, polyester is doing most of the work, and poly tends to crush and mat on the nosings where every step lands, so it looks tired faster. wool bounces back and hides soil better. if you love the Island Wave look, ask for a sample, scrub it with a key edge to test, and use a dense pad with a tight waterfall install.

Wool depend the weave. Anything that creates a "smile" with a bend in the broadloom....not good.

Nothing will outlast a wool and nylon blend, Call it best of both worlds. Go to a good local high end carpet shop, ( no big boxes ). Your best advice, along with picture of stairs you have, will come from there.

Me??

Believe it on these ( Deva is one of my favorites) cannot be killed

AI OverviewAntrim Carpet (part of Stanton Carpet) offers hand-loomed residential carpets and custom rugs that combine natural wool with nylon for enhanced strength, resilience, and softness. [1, 2, 3]Popular Antrim Wool & Nylon Blend Styles

• Stanton Antrim Deva Residential Carpet
  • Fiber Composition: 55% Wool / 45% Nylon
  • Width: 15 feet
  • Construction: Hand-loomed, budget-friendly style available in colorways like Grain, Mist, and Lagoon. [1, 2, 3]
• Stanton Antrim Alicante Wool Blend Residential Carpet
  • Fiber Composition: 60% Wool / 40% Nylon
  • Width: 15 feet
  • Construction: Fine flatweave featuring delicate linear stitches over a heathered base. [1, 2]
• Virtue by Antrim
  • Fiber Composition: 51% Wool / 49% Nylon
  • Width: 15 feet (available for wall-to-wall, custom rugs, or stair runners)
  • Construction: Hand-loomed Berber style with an understated, clean look. [1]
• Antrim Arrieta
  • Fiber Composition: 90% Natural Wool / 10% Nylon
  • Construction: Dynamic textured pile combining natural wools with nylon-blended yarn. [1]

Benefits of Antrim Wool-Nylon Blends

• Durability: The addition of nylon reinforces the natural wool fibers, making the carpet more resilient against high foot traffic, flattening, and wear. [1, 2, 3]
• Comfort & Aesthetics: Wool provides natural warmth, a soft hand-feel, and rich texture, while the hand-loomed construction creates distinct visual depth. [1, 2, 3]
• Versatility: Most styles come in a 15-foot broadloom width and can be installed wall-to-wall or fabricated into custom area rugs and stair runners. [1, 2]

I will add..........

• If you want to avoid baked in soil ANY carpet? Bare feet are not your friends. Wear house shoes, clean socks: )
• Don't leave oil/perspiration in your wake,