Outerwear and Blazers: Getting the Fit and Layering Right
Quick answer
Choose outerwear with enough room for your intended layers. Compare the individual chart with a similar garment that fits comfortably over those layers. Tailored, oversized and dropped-shoulder designs have different silhouettes; check the stated fit and freedom of movement rather than applying one shoulder rule to every style.
Jackets, coats and blazers compared
| Type | Role | Layer underneath |
|---|---|---|
| Blazer | Structure and polish | Shirt, cami, fine knit |
| Denim jacket | Casual mid-layer | T-shirt, hoodie |
| Lightweight jacket | Transitional seasons | Knit or long-sleeve top |
| Coat | Warmth, outermost layer | Sweater, blazer, or both |
The shoulder rule for blazers
On a traditionally tailored blazer, the shoulder seam usually sits near the shoulder edge. Oversized and dropped-shoulder styles intentionally extend beyond it. Check the design, measurements and photos, and make sure you can move without pulling across the back.
Alteration options depend on the garment’s construction. Shoulders can be particularly difficult to alter, and sleeve, waist or length changes may also be limited. Check the fit before ordering and consult a tailor before relying on alterations.
The one exception is a deliberately oversized or drop-shoulder blazer, where the seam is designed to sit low. The product description will say so.
Sizing for layering
Work out what you will realistically wear underneath before choosing a size:
- Over a t-shirt or cami only — your usual size is generally right.
- Over a fine knit or shirt — usual size, provided the cut is not slim.
- Over a chunky sweater — size up. This is where most coat-sizing regrets happen.
Then check the chest or bust measurement in the size chart while wearing that underlayer, not while measuring bare.
Sleeve and body length
Sleeve length on a blazer should end at the wrist bone, leaving a small amount of shirt cuff visible if you are wearing one. On casual jackets, slightly longer is normal and intentional.
Body length changes the proportion of the whole outfit. A cropped jacket emphasises the waist and pairs well with high-waisted bottoms. A longline coat lengthens the silhouette and works better over slim bottoms than over wide-leg ones, which can become bulky.
Fabric and season
- Cotton and denim — transitional weather; little wind resistance.
- Polyester blends — lightweight and quick-drying; common in packable jackets.
- Knit and fleece-backed — warm but not weatherproof.
- Woven suiting fabrics — used for blazers; holds structure rather than providing warmth.
Composition is listed in the specifications tab on each product page. Note that a blazer is a structural garment rather than a warm one — it is meant to be layered under a coat in cold weather.
Care
- Check the care label before washing. Structured blazers frequently require dry cleaning, and washing them can distort the internal shaping.
- Hang jackets and coats on a broad or padded hanger. Wire hangers create permanent shoulder dents.
- Fasten the top button when hanging a coat, so it keeps its shape across the chest.
- Air outerwear between wears rather than washing it. Most outer layers need cleaning far less often than base layers.
- Follow the care label on the garment, which takes priority over general advice.
Explore products from this guide
Select an image to view the product’s description, specifications, sizing and current options.
Frequently asked questions
Q: How should a blazer fit at the shoulders?
For a traditionally tailored blazer, the shoulder seam usually sits near the outer edge of your shoulder. Oversized and dropped-shoulder styles are intentionally cut differently. Compare the product’s measurements, intended silhouette and photos, then check that you can move your arms comfortably without pulling or restriction.
Q: Should I size up in a coat?
Check the specific coat’s size chart and intended fit before sizing up. Compare its measurements with a coat that fits over the layers you plan to wear. Allow room through the chest, upper arms and shoulders for comfortable movement. Some coats already include layering room, so your usual size or an automatic size increase may not be appropriate.
Q: How long should blazer sleeves be?
They should end at the wrist bone, leaving a small amount of shirt cuff visible if you are wearing a shirt. Casual jackets are often worn slightly longer.
Q: Is a blazer warm enough for winter?
Generally no. Blazers are made from woven suiting fabrics chosen for structure rather than insulation. In cold weather a blazer is best worn as a mid-layer under a coat.
Q: Can I machine wash a blazer?
Check the care label first. Structured blazers often specify dry cleaning, because washing can distort the internal construction that gives the garment its shape.
Q: How long does delivery take?
Allow 1–3 business days for processing, plus transit time for your destination after dispatch. Standard shipping is free to supported destinations; delivery dates are estimates and import charges may apply separately. See our Shipping Policy for destination-specific times and charges.
Shop the collections
First-time customer? Use code FIRST15 for 15% off (no minimum spend, once per customer). See our shipping and returns policies, or get in touch via contact.