Should I Buy 100% Wool or a Blend? A Stylist's Honest Answer

FASHION ADVICE · FABRIC GUIDES · KNITWEAR

Here's the short answer: it depends entirely on what you're buying and how you plan to wear it — and getting this decision right can be the difference between a piece you treasure for a decade and one that pills to death by January. I've made both mistakes, believe me. My most-loved camel coat is a 90% wool situation I've worn for six winters. My worst ever purchase? A scratchy 100% wool jumper I wore exactly once before it was relegated to the charity bag. So let's talk about this properly.

What Does "Wool Blend" Actually Mean?

A wool blend simply means that wool is combined with one or more other fibres. The most common partners are polyester, nylon, acrylic, cashmere, or a touch of elastane. The ratio matters enormously — a coat that's 80% wool and 20% polyester is a world apart from something that's only 30% wool with the rest synthetic filler. Always check the label before you buy, and if a "wool" piece feels suspiciously cheap and lightweight, trust your instincts.

The Case for 100% Wool

There's a reason wool has clothed humans for thousands of years — it is genuinely brilliant. It regulates temperature like nothing else, keeping you warm in winter but not swampy in a centrally-heated office. It's naturally moisture-wicking, odour-resistant, and has a beautiful drape that synthetics simply can't replicate. For tailored pieces — a blazer, a classic coat, wide-leg trousers — 100% wool is where you want to be if budget allows.

Best for: Investment coats, tailored blazers, heritage knitwear
Watch out for: Some 100% wool can be scratchy directly on skin — merino is the exception, being naturally soft
Care: Usually requires hand wash or dry clean — factor this in before you buy

One caveat: not all 100% wool is created equal. Lambswool, merino, cashmere, Shetland — these are all very different beasts. Merino is the workhorse: soft, fine, and surprisingly durable. Shetland is chunkier and more rustic. Cashmere is the ultimate luxury, but pure cashmere is notoriously prone to pilling unless it's a high-quality, tightly-knit version.

The Case for a Wool Blend

Here's what I tell every client who asks: for everyday wearable pieces, a good wool blend often outperforms pure wool in real life. A merino/nylon blend, for example, is significantly more resistant to pilling and holds its shape wash after wash. A wool/elastane blend in trousers gives you that polished tailored look with actual comfort when you sit down. For anything you're going to be wearing regularly — your work jumper, your weekend knit, your everyday coat — a well-composed blend is genuinely the smarter choice.

Best for: Everyday knitwear, trousers, dresses, anything worn frequently
The sweet spot: Look for at least 50–70% wool in the composition
Avoid: Anything with wool listed below 30% — that's basically synthetic with a wool-shaped price tag
Bonus: Easier to care for, often machine washable on a wool or delicate cycle

What to Buy Where: My Brand Picks

I've done the legwork so you don't have to. Here's where I'd actually spend my money across different budgets:

High Street Picks:

M&S — Their wool-blend coats and knitwear are genuinely excellent for the price. The Pure Wool range in particular punches well above its cost and I've recommended it to countless clients.
Cos — Beautifully minimal knitwear with clean compositions. Their merino and wool-blend jumpers are consistently well-reviewed and the fit is consistently excellent.
Jigsaw — If you want to invest in a proper wool coat on the high street, Jigsaw is my first call. Their outerwear fabric quality is exceptional at the price point.
The White Company — Their merino and cashmere blends are soft, well-finished, and last for years. The knitwear here is a reliable go-to every autumn.
Reiss — For tailored wool-blend trousers and structured blazers, Reiss delivers a premium feel at mid-market prices. Their fabric compositions are usually very respectable.
Me&Em — One of the best high street options for quality knitwear. Their wool blends are thoughtfully composed and the brand is transparent about materials.
Whistles — Reliable, wearable wool knitwear and coats with sensible compositions. Their classic pieces hold up beautifully season after season.

Premium: Hobbs and Mint Velvet both offer excellent wool and wool-blend coats in the £200–£400 range that feel genuinely special without requiring a bank loan.

Luxury: For 100% wool investment pieces at the top end, Loro Piana (pure merino and cashmere) and Harris Tweed labels are benchmarks. Expect to pay for it, but expect it to last twenty years.

Independent Brand Picks:

Brora — A Scottish cashmere and wool brand doing things the right way. Their pure cashmere and merino pieces are exquisite and genuinely durable. A real find if you haven't discovered them yet.
Baukjen — A sustainable British brand with a strong wool and merino offering. Beautifully made, consciously sourced, and the kind of label that deserves far more attention than it gets.

My Honest Verdict

For coats and tailored pieces: go as close to 100% wool as your budget allows — you will feel the difference immediately and you'll have it for years. For knitwear: a well-composed merino or wool blend (50%+) is often the smarter, more practical choice. For trousers: blend every time — you'll thank yourself the first time you sit down. And always, always check that label.

Never Guess Your Size Again — Meet Tellar

While we're talking about shopping smarter, can I introduce you to something that has genuinely changed how I approach buying online? Tellar.co.uk is the UK's leading free sizing tool — and once you've used it, you won't buy clothes without it.

Here's how it works: you measure once — bust, waist, and hips — or simply enter your size in a brand you already know. Tellar then instantly matches your body to the precise size across 1,500+ brands. No more ordering two sizes and hoping for the best. No more squinting at brand size guides that somehow all say something slightly different. Just your exact size, in every brand, instantly.

Use the Store Size Lookup tool to find your precise fit in brands like COS, Reiss, Jigsaw, M&S, and hundreds more — before you buy. It's completely free, works in-browser, and requires absolutely no download.

And if you're after more styling advice beyond fabric guides, the Tellar Fashion Hub is a library stacked with free posts from top stylists — honest, unbiased, independent, and always free. Whether you need help with sizing, trending pieces, or styling for your body shape, it's all there. Some of my favourites:

Measure once. Shop confidently. Always free. Tellar.co.uk