Herno Size Guide for Men: IT to UK and US Sizes, Fit and Layering

Herno cuts its men’s jackets and coats in Italian sizes, from IT 44 to IT 60. To find your UK and US chest size, subtract 10 from the Italian number, so an IT 50 is a 40 and an IT 52 is a 42. Coveti already lists every Herno jacket and coat in UK and US chest sizes, so you can order your usual jacket size.

Quick answer

• Herno outerwear uses Italian men’s sizes, IT 44 to IT 60.
• UK and US chest size = IT size minus 10 (IT 48 = 38, IT 50 = 40, IT 52 = 42).
• Trousers and some knitwear come in letter sizes, XS to XXL.
• Herno Maggiore trainers run EU 41 to 45, shown on Coveti as UK 7 to 11.
• Beanies and scarves are One Size. Baseball caps come in M and L.
• Herno publishes a fit type per product: Regular fit is the most common, with Slim, Relaxed, Boxy and Oversize cuts on some styles.
• Order your usual jacket size. Size up one only if you plan to wear a thick knit under a slim-fit piece.

How does Herno sizing work?

Herno is an Italian house. It was founded in 1948 in Lesa, on the shore of Lake Maggiore, and it still labels its men’s outerwear the Italian way. The conversion is the same across the whole range: take away 10 from the Italian number and you have the chest size used in the UK and the US.

On Coveti, that work is done for you. Every Herno jacket, coat and parka is listed with UK and US chest numbers, so a 40 on the size selector is the same garment Herno labels IT 50. You do not need to convert anything at checkout.

Herno size chart: Italian to UK and US chest

Not every style is cut across the full run. Some coats stop at 44, while staples like the Superfine Cotton Stretch T-Shirt in white go all the way from 34 to 50. The size selector on each product page shows exactly which sizes are in stock.

How do I measure my chest for Herno?

Stand relaxed and run a soft tape around the fullest part of your chest, under the arms and across the shoulder blades. Keep the tape level and snug, not tight, over a thin shirt. The number in inches is your chest size, and it should line up with the size you already wear in tailored jackets.

The easiest check is a jacket you already own and like. Lay it flat, measure across the chest from armpit to armpit, and compare it with the garment notes on the product page. A down jacket and a wool coat in the same size will feel different, because the coat is built to go over a blazer and the down jacket is built to go over a knit.

Does Herno run small?

Herno does not publish a blanket statement saying its clothes run small, and we will not invent one. Fit depends on the cut. A Regular fit jacket in your usual size will sit the way your other jackets do. A Slim fit piece is cut closer to the body by design, and an Oversize piece is cut roomy by design.

Our advice is simple. Order your usual jacket size. Size up one only if you will layer a thick knit, such as a chunky cardigan, under a slim-fit piece. If you plan to wear a shirt and a fine merino under a Regular fit jacket, stay with your usual size.

What do Herno’s fit types mean?

Herno names a fit on each product, and it is the most useful sizing signal you have. Here is how to read it.

Herno fit examples on Coveti

These styles show the main fit types in practice. All prices are in US dollars.

1. Blue Blazer with Bib in 2-Layer Windstopper

This is the clearest example of a Slim fit at $1,970. The blazer is polyester microfibre bonded to a membrane with a water column of 20,000 mm, and the bib can be worn attached and removed with the weather. Because the cut is close, it suits a shirt and a fine knit. Size up one only if you want a heavy jumper under it.

2. Vintage-Effect Wool-Blend Field Jacket in Navy Blue

Herno describes this $2,000 field jacket as a relaxed fit made for layering in colder months. The fabric is thick wool yarn blended with polyester for a vintage look, with a dense weave and a soft finish. Take your usual size and you will have room for a cable knit underneath. It suits a man who wants a casual jacket that still looks considered.

3. Stretch Twill Oversize Jacket in Blue

The name says it. This $1,940 jacket is cut generously in elasticated twill made from recycled polyester and elastane, with an ultra-light coating that gives a soft, matte surface. Herno designed it as a travel and outdoor piece. Stay with your usual size, because the volume is already built in, and sizing up will swamp the shoulders.

4. Navy Blue Trousers in Cotton-Effect Stretch Fabric

A regular fit trouser in lightweight, breathable stretch polyester with an elasticated waist insert, at $680. It comes in letter sizes from XS to XL, so choose the letter you wear in other Italian trousers. The waist insert gives a little stretch, which makes these forgiving if you sit between two sizes.

5. Taupe Maggiore Trainers in Suede

Herno’s Maggiore trainers sit on a light, technical sole designed to support weight, and this suede pair costs $1,050. They run EU 41 to 45 and appear on Coveti as UK 7 to 11. Choose the UK size you wear in other European trainers.

How do Herno trousers and knitwear sizes work?

Most Herno trousers use letters, XS to XXL. A few denim styles and the resort cargo trousers follow the same letters. Herno does not publish a waist conversion for every letter, so the best guide is the letter you already buy from Italian brands, checked against the garment notes on the product page.

Herno knitwear is split. Some jumpers are sold in chest numbers, such as the pure cashmere crew necks, sold in sizes from 36 to 44, and some polos and T-shirts use letters. If a knit is sized in numbers, it follows the same chest logic as the jackets, so a 40 jumper pairs with a 40 jacket.

Herno T-shirts and polos follow the same pattern. The Superfine Cotton Stretch T-Shirt uses chest numbers, while the Wool Jersey Polo Shirt uses letters.

Herno trainer size conversion

The rule is EU minus 34. Browse the full range of men’s sneakers if you want to compare Herno with other labels.

Hats and scarves

Herno beanies, including the English Rib Cashmere Beanie and the Ribbed Wool Beanie, are One Size, with ribbing that holds the shape. The baseball caps come in M and L. Scarves are One Size. See the full edit of men’s hats.

How should I size a Herno jacket for layering?

Think about what goes underneath before you choose.

• Down jackets: the lightest Nylon Ultralight pieces are built to go over a shirt and a fine knit. Usual size.
• Padded blazers: La Giacca and the Windstopper blazers sit like a tailored jacket. Usual size over a shirt.
• Coats and car coats: cut to go over a blazer. Usual size, and check that you can lift your arms without the shoulders pulling.
• Parkas: longer and roomier, with space for a jumper. Usual size.

For a deeper look at each category, read our guides to Herno down jackets and Herno coats for men. Shop all men’s jackets and men’s coats on Coveti.

Buying Herno in the right size at Coveti

Every piece is 100% authentic and checked before dispatch. Coveti ships worldwide by express from hubs in the UAE and Australia, and duties are calculated at checkout, so the price you see is the price you pay. If a size is not right, our returns page explains the process. The full Herno collection runs to 380 men’s styles.

Read next: Herno parkas for men, the best Herno coats and who is Herno.

Frequently asked questions

How do I convert Herno IT sizes to UK and US sizes?

Subtract 10 from the Italian size. IT 48 is a UK and US 38, IT 50 is a 40, IT 52 is a 42, IT 54 is a 44 and IT 56 is a 46. Coveti lists Herno jackets and coats in these UK and US chest sizes already.

Does Herno run small?

Herno does not publish a general statement that it runs small. Fit depends on the cut named on each product: Regular, Slim, Relaxed, Boxy and Oversize. Order your usual jacket size and size up one only for a thick knit under a slim-fit piece.

What size Herno jacket should I buy if I am a 40 chest?

Choose 40 on Coveti, which is the Herno Italian size IT 50. That is the right size for wearing over a shirt and a fine knit in a Regular fit style.

What sizes do Herno trainers come in?

Herno Maggiore trainers come in EU 41 to 45. Coveti shows them as UK 7 to 11, using the rule EU minus 34.

Are Herno trousers sized in numbers?

Most Herno trousers use letter sizes from XS to XXL. Choose the letter you wear in other Italian trousers and check the garment notes on the product page.