Blazers vs Suit Jacket: Your Style Guide To The Right Fit


Selecting the perfect piece to elevate your outfit can be quite a daunting task. Blazers and suit jackets may seem similar at first glance, but there are key differences that determine when each style is most appropriate.

This blog delineates the fine lines distinguishing a blazer and a suit jacket, ensuring that you're the man who not only commands attention but also respects precision. From the cut and silhouette to the fabric and detailing, you will learn a lot about the differences between the both.

Whether to ace a casual rendezvous or seal the deal at a corporate meet, we've got you covered!

What Is A Blazer?


A blazer is the versatile cornerstone of a man's wardrobe, distinguished from a suit jacket by its casual demeanour. 

Blazers, whether structured or canvased, offer flexibility and can be dressed up or down. However, it is typically a part of semi-formal and casual ensembles. No matter what you pair it with, a blazer will ensure that your outfit looks more put together and refined. 

It's a classic piece that bridges formal and informal occasions.

What Is A Suit Jacket?


A suit jacket is a staple of formal wear, primarily for men. It's a tailored coat, typically made from fine materials like wool or silk. It forms part of a suit, paired often with matching trousers. 

A suit jacket distinguishes itself with its structured shoulders, lined interior, collared neckline, front button fastening, chest pocket and various details like lapel styles. 

A suit jacket is commonly worn for business occasions, formal events, or any setting requiring a smart, coordinated appearance. 

A suit jacket should be your top choice if you're aiming for a professional and polished look!

The Main Differences: Blazer And Suit Jacket

Coming to the main subject of this blog, here are some major differences between a blazer and a suit jacket:

1. Fabric

Suit jackets are usually crafted with finer, more luxurious and more delicate fabrics like worsted wool, tweed, and wool flannel. This is because these fabrics are more suitable for professional and upscale events.



On the other hand, blazers are made from lightweight and breathable fabrics like cotton, linen, corduroy and sometimes even wool and tweed. Since they are softer and more versatile, they're perfect for casual occasions.

2. The Model

With a structured and fitted look, suit jackets come with a defined waist and a somewhat flared cut around the hip.



On the contrary, blazers have a more casual model with a relaxed fit, softer shoulders, and a less defined waist.

3. The Shoulders

Suit jackets feature padded shoulders, giving the wearer a solid, strong posture. This is consistent with the standard business and formal settings where suit jackets are typically worn.



Conversely, blazers have less padding and, sometimes, even a natural shoulder line, giving them a more relaxed and casual look.

4. The Insides

Suit jackets are known for their intricate internal linings, which are often made from smooth, silky materials. This special lining adds to the jacket's structure while providing extra space and comfort.



The insides of the blazer are simpler and lighter, reflecting their more flexible nature and ability to be worn in warmer or less formal contexts. They do not have as much detailing as a suit jacket and, thus, look and feel casual.

5. Buttons

Buttons in suit jackets are typically colour-coordinated to the jacket's fabric, resulting in a consistent, coherent look.



In contrast, blazers typically include unique metal or horn buttons that offer the garment a touch of character and casual.

You can now identify between the two easily, right?

To Note: Blazers always have the option of customisation, and styles can be intertwined based on the wearer's preference. Check out our website to know how you can get your blazers customised!

When To Wear What?

As a general rule of thumb, blazers are usually worn on smart-casual and informal occasions when you want to look put together but less formal. On the other hand, suit jackets lean more towards formal occasions and important business events for a professional and polished look.

Here are some specific occasions where you can don a blazer and a suit jacket, respectively:

As a general rule of thumb, blazers are usually worn on smart-casual and informal occasions when you want to look put together but less formal. On the other hand, suit jackets lean more towards formal occasions and important business events for a professional and polished look.

Here are some specific occasions where you can don a blazer and a suit jacket, respectively:

1. Blazers

  • Business casuals: If you don’t want to appear overly formal or overdressed in business settings, a blazer is your go-to! 
  • Smart-casual events: As mentioned above, blazers are suitable for events that need a balance between formality and casualty. These include parties, dates, or even low-key functions and weddings. 
  • Creative workplaces: Blazers can help you maintain professionalism while expressing your personal style in creative industries.
  • Weekend and vacations: Whether you’re attending a Saturday brunch or chilling at a cafe on vacation, a blazer can make you look like you’ve actually put effort into your outfit and that you have a sense of style. 

2. Suit Jackets

  • Formal business occasions: As you already know by now, suit jackets are a must for important business events like conferences, meetings, and presentations. Professionalism is the key here.
  • Weddings: If you are a close relative/friend of the bride or groom, a suit jacket is what you should undoubtedly wear. They’re also best suited for events like galas, award ceremonies, and other formal functions.
  • Professional networking: A suit jacket is an excellent first impression when attending networking events or industry conferences.
  • Dinner parties or fine dining: Wearing a suit jacket to an elegant dinner party or an upscale restaurant shows your appreciation and respect for the event. 

Always consider the event's dress code or the setting you'll be in to ensure you're appropriately dressed!

How To Style: Blazer And Suit Jacket

When it comes to styling a blazer and a suit jacket, there are some important points to keep in mind. 

1. For Blazers

  • Pair with slim-fit chinos or jeans. Cuffed or cropped jeans work best. Avoid overly baggy bottoms.  
  • Opt for solid colours over patterns. Navy, grey and black blazers are the most versatile.
  • Wear a crisp dress shirt underneath, either long or short-sleeved. You can also wear a plain t-shirt beneath for a contemporary and laid-back style.
  • Always have the blazer nipped in at the waist for a more tailored fit.
  • Since it's a more casual look, you can try trendy accessories if you're attending an informal event. However, cut down on the accessories if you have a formal occasion to attend. 

2. For Suit Jackets

  • Always wear matching trousers with your suit jacket. Ensure they are hemmed to the right length, hitting just at the top of your shoes.   
  • Pair with a coordinating tie. Stick to solid colours or simple patterns that match or complement your suit. Heavy patterns will only complicate the look, defying the purpose of a formal outfit. 
  • Make sure to accessorise minimally—a simple watch, a belt that matches your shoes, and subtle sunglasses, if needed.  
  • Wear dress shoes that match your belt. Loafers or oxfords work best.  
  • Consider going without a pocket square for a more minimalist look.  However, a pocket square is also encouraged to add a sense of style to your suit. 

Remember, the better you style it, the better the overall look!

Blazer Or Suit Jacket, Kachins Has Them All!

Founded in 1981 in Dubai, UAE, Kachins is a symbol of refinement and personalised tailoring. We are honoured to have a renowned fabric collection from Italy, Switzerland, and the UK, artfully fusing four decades of expertise with contemporary fashions to craft every attire.

Our flawless blazers and suit jackets are meticulously crafted for the contemporary gentleman, seamlessly uniting skill and heritage.

Enhance your look with the exclusive touch of #CustomByKachins.

Book an appointment on our website to get started!


In conclusion, whether your selection is a blazer or a suit jacket truly depends on the occasion and your style. 

As we've navigated through the nuances of Blazers vs Suit Jackets, the most important takeaway is that either choice can uplift your ensemble, presenting you as the epitome of refinement and sophistication. Stay true to yourself, and remember that the right fit is always the most stylish statement you can make. 

Suit up, gentlemen, it's time to make a lasting impression on the crowd!



What is the difference between a blazer and a suit jacket?

A blazer is usually less formal than a suit jacket. It is also lightweight, unlined, and unpadded, and the lapels are not edge-stitched, unlike a suit jacket. A blazer is preferred for casual occasions, while a suit jacket is for formal occasions.

Can a blazer be called a jacket?

Yes, a blazer is a type of jacket too. However, it is cut more casually than a suit jacket and a tad bit more formal than a sports jacket.

What is a suit jacket called?

A suit jacket is usually a part of a two-piece or three-piece suit. It also goes by names like “lounge jacket”, “lounge coat”, or “suit coat”. It is one of the most important elements of menswear.

Can I wear a blazer to a wedding?

Yes, you can wear a blazer to a wedding if you can style it properly to make it look formal and polished. But if the wedding has a dress code and you think a blazer is casual, it’s better to suit up with a jacket.

What is the rule for blazers for men?

The rule of thumb for blazers is that they should never extend the length of a typical coat or jacket. Although blazers are intended to be slightly longer than your shirt, they look best if shorter than a regular suit jacket.