Fusalp Sizing: Does It Run Small? Your Complete UK Fit Guide

By Ella Blake — Fashion Stylist | Tellar Fashion Hub — Always honest, unbiased & unsponsored

Yes — Fusalp runs small. As a rule, size up at least one size from your usual UK size, and if you're between sizes at all, always go bigger. This is a French brand built on a distinctly Parisian idea of fit: sleek, close-to-the-body, tailored within an inch of its life. It's gorgeous when it works. When it doesn't, it's a very expensive mistake.

I've been obsessing over Fusalp for years — it's genuinely one of those brands that makes you feel like you're in a Slim Aarons photograph the moment you put it on. But the first time I ordered a jacket online (a gorgeous navy Barsy), I went with my usual size and spent the entire ski trip unable to lift my arms properly above my head. Not ideal when you're trying to pole plant on a mogul field. Lesson very much learned. Size up. Always.

Who Is Fusalp?

If you haven't come across Fusalp yet, let me introduce you to your new obsession — and your new credit card anxiety. Fusalp was founded in 1952 in Annecy, in the French Alps. They designed the first technical ski suit for the Portillo World Championships in 1966, and they've been the quietly cool alternative to the flashier luxury ski brands ever since. Think: the insider choice. The brand worn by the woman on the slopes who looks effortless without trying.

The aesthetic is distinctly French — clean lines, muted palettes punctuated by the occasional brilliant colour pop, and a silhouette that is unapologetically fitted. They've expanded beyond ski wear into an urban lifestyle range too, but ski wear remains their heartland and their absolute finest work.

The Golden Rule: Size Up at Fusalp

Fusalp uses French sizing, which runs smaller than standard UK sizing
Most customers — and most stockists — recommend going up one full size from your normal UK size
If you're between sizes, always go to the larger one — no exceptions
If you're shorter (under 5'4"), note that some styles can run long in the body and torso
If you plan to layer thermals or a mid-layer beneath a jacket, size up two sizes

Fusalp Women's Size Conversion Table

Tip: when in doubt, measure your bust and use that as your primary guide. Fusalp's fit is tailored, so a centimetre or two makes a real difference.

Sizing by Garment Type

Ski Jackets

This is where the sizing difference really matters. Fusalp ski jackets — including the iconic Barsy and Emris styles — have a tailored, form-fitted silhouette. They're not designed with the bulk of a traditional ski jacket in mind. If you're wearing anything more than a thin base layer underneath, go up one size. If you're planning serious technical skiing with a proper mid-layer system, go up two. The construction is exceptional — waterproof, breathable, beautifully finished — but it won't forgive you for going too small.

Ski Pants & Fuseaux

The Diana ski pants and the brand's signature fuseau-cut styles (that sleek, stirrup-style leg that made 1960s ski fashion so iconic and is now firmly back) follow the same French sizing and are equally snug. They're designed for a close-to-the-leg fit, which looks incredible but means there's no give if you go true to size. One size up gives you comfort for skiing; true to size gives you the most polished silhouette if you're mainly doing après. Pick your priority accordingly.

Urban & Lifestyle Pieces

Fusalp's growing urban collection — the jerseys, polo shirts, zip tops and lifestyle trousers — follows the same sizing principle, but with slightly more tolerance since there's no technical performance requirement. I'd still size up on anything fitted or structured. The polo shirts in particular (which I learnt the hard way) can be deceptively long in the body on petite frames, so do check the length measurements if you're on the shorter side.

Petite & Plus Sizing at Fusalp

Fusalp's size range currently runs from a French 34 (UK 6) to a French 46 (UK 18) on most styles, though some pieces have a narrower range. The brand isn't the most inclusive in terms of extended sizing — it's something they're working on, but if you're above a UK 18, options are limited directly from Fusalp. The urban collection tends to have slightly more size flexibility than the technical ski pieces.

High Street Alternatives to Fusalp

Fusalp sits firmly in the luxury tier — we're talking £600+ for a jacket — so if the price point is a stretch but you love the aesthetic, here are my picks that genuinely capture something of that alpine-chic energy:

Sweaty Betty — their ski and snowsport range has come on enormously in the last few years. Excellent fit, great technical performance, and sizing that is far more transparent and consistent than Fusalp's.
Lululemon — if you want that sleek, body-skimming aesthetic in ski or après-ski pieces without the French sizing headache, Lululemon delivers. Their ski and base layer pieces are excellent quality.
Superdry — genuinely underrated for ski jackets. Their Snow technical range has some solid pieces at a fraction of the price, and the sizing is straightforward UK sizing.
Barbour — for that polished, outdoors-meets-countryside aesthetic, Barbour remains brilliant. Their International range has a sporty edge that works perfectly for alpine casual dressing.
All Saints — not ski-specific, but their sleek leather and moto-inspired jackets translate brilliantly to après-ski dressing. The brand nails that dark, cool, unfussy aesthetic.
Reiss — for urban and lifestyle pieces with a clean tailored feel that echoes Fusalp's off-slope collection. Smart, polished, and the sizing is reliably true to UK standards.
COS — minimal, functional, European in sensibility. Their knitwear and outerwear layers are perfect for the après-ski wardrobe and are much more forgiving in sizing.
Gymshark — if you want high-performance base layers and technical pieces at accessible prices, Gymshark punches well above its weight class now. Great for the underlayers you'll wear beneath your ski jacket.

Independent Picks

Toni Sailer — an Austrian ski brand with serious heritage and an aesthetic that sits in the same elegant, fitted lane as Fusalp. Slightly better availability in larger sizes and a touch more forgiving in the fit. A genuinely brilliant independent find for ski fashion lovers.
KJUS — a Swiss-German brand that is obsessive about fit and technical performance. Their women's ski pieces have an almost architectural precision to them. If Fusalp is the fashion girl's ski brand, KJUS is the skier who also happens to look immaculate. Exceptional quality.

Premium Options

Perfect Moment — the closest aesthetic rival to Fusalp on the market right now. Bold prints, exceptional construction, and a similarly sleek fit. Their sizing advice is clearer, which is a bonus.
Goldbergh — Dutch luxury ski brand that has exploded in popularity. Glamorous, fashion-forward, and available in a wider size range than Fusalp.

Luxury & Designer Options

Moncler Grenoble — the original luxury ski flex. An investment at every level, but the quality and prestige are undeniable.
Bogner — another alpine heritage brand with serious cachet on the slopes. Similar French/European sizing challenges, so the same size-up rule applies here too.

My Final Verdict on Fusalp Sizing

Fusalp is one of those brands I recommend with genuine love and genuine caveats in equal measure. The clothes are beautiful — the construction is meticulous, the aesthetic is timeless, and there is nothing quite like the way a Fusalp jacket photographs on a mountain. But the sizing will catch you out if you're not prepared for it.

Size up one size as your starting point. Size up two if you're layering. If in doubt, go bigger — you can always belt it. And if you're buying online without trying first, use the size guide at Tellar below to make sure you're matching your actual measurements to the brand's chart rather than guessing off a UK number alone.

Never Guess Your Size Again — Use Tellar

Fusalp's French sizing is exactly why Tellar.co.uk exists. It's the UK's leading sizing tool — measure once (bust, waist, hips), and get your precise size matched across 1,500+ brands instantly. No more size guesswork, no more expensive returns.

🔍 Use the Store Size Lookup tool — find your exact Fusalp size in seconds
📏 Visit Tellar.co.uk — always free, no downloads, works in-browser
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