A man in the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat, paired with a white shirt, burgundy tie, and gray plaid trousers, stands against a plain background—an ideal look for formal occasions.
A man is seen from the back wearing the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat with a white shirt and gray plaid trousers—an elegant, formal look.
A man stands against a plain background wearing a slim fit white shirt, gray plaid trousers, burgundy tie and shoes, marcdarcys KELVIN Royal Blue Single Breasted Waistcoat, glasses, watch, and has short hair with a beard—perfect for formal events.
A man in a slim fit white shirt, marcdarcy KELVIN royal blue single breasted waistcoat, burgundy tie, gray plaid trousers, and burgundy dress shoes stands against a plain background—ideal for formal occasions.
Close-up of the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat in slim fit over a white shirt, styled with a blue and silver patterned pocket square and a red textured tie—ideal for formal occasions.
Close-up of the marcdarcy KELVIN royal blue single breasted waistcoat pocket with a horizontal slit, paired with gray plaid trousers—perfect for formal occasions.
A man in the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat, paired with a white shirt, burgundy tie, and gray plaid trousers, stands against a plain background—an ideal look for formal occasions.
A man is seen from the back wearing the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat with a white shirt and gray plaid trousers—an elegant, formal look.
A man stands against a plain background wearing a slim fit white shirt, gray plaid trousers, burgundy tie and shoes, marcdarcys KELVIN Royal Blue Single Breasted Waistcoat, glasses, watch, and has short hair with a beard—perfect for formal events.
A man in a slim fit white shirt, marcdarcy KELVIN royal blue single breasted waistcoat, burgundy tie, gray plaid trousers, and burgundy dress shoes stands against a plain background—ideal for formal occasions.
Close-up of the marcdarcy KELVIN Royal Blue Single Breasted Waistcoat in slim fit over a white shirt, styled with a blue and silver patterned pocket square and a red textured tie—ideal for formal occasions.
Close-up of the marcdarcy KELVIN royal blue single breasted waistcoat pocket with a horizontal slit, paired with gray plaid trousers—perfect for formal occasions.

KELVIN - Royal Blue Single Breasted Waistcoat

£58.99
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Crafted from a rich royal blue textured fabric blended with a touch of elastane, this men's waistcoat offers a refined fit and subtle stretch for all-day comfort. Designed for the discerning gentleman, this single-breasted waistcoat features a striking MD paisley print lining that adds a distinctive edge to your formal ensemble. Whether paired with matching trousers or layered with contrasting separates, it elevates your look with timeless sophistication and versatility, making it an essential addition to your wardrobe for weddings, business events, and special occasions.

Also available in a double-breasted option.

Model wears size 38R. 

Features

  • Slim fit
  • Single-breasted
  • 5 button fastening
  • Complimentary pocket square
  • Buckle adjuster straps 

Matching lining accessories

Paisley Accessory Set in Sky

Composition

Main: 70% Polyester, 27% Viscose, 3% Elastane

Lining: 100% Polyester

Wash & Care

Dry clean only

⛟ Delivery
Orders are dispatched Monday - Friday (excl. UK bank holidays).
For UK delivery we offer a free standard shipping option or a paid next day option (UK mainland only, please check T&Cs for Scottish Highlands and Isles).
All deliveries are sent on a tracked service. 
To see full delivery details and international rates please click here.

⏎ Returns
If you wish to return any goods they must be returned within 14 days of receipt for a refund or an exchange.
For more info on our returns policy please click here.

What's my suit size?

All Marc Darcy suits are labelled in UK sizing, this is based on your chest and waist measurement in inches. For example, if your chest measures 40 inches then you should be a size 40. Similarly, if your waist measurement is 34 inches, you should be a 34 trouser. If you are between sizes, we recommend rounding up.

For more help on measuring your size, see our handy guide here, and see all sizing guides here. 

How long are the trousers?

 All trousers marked "R" or not followed by a letter are a regular length of 31 inches for the inside leg length. Most trousers are only available in this regular length, however all trousers can be easily taken up, with about an inch of fabric that could also be let down.

If given the option on the sizing choices, an "S" means the trouser has an inside leg length of 29 inches, and an "L" means the trouser has an inside leg length of 33 inches.

To see the trouser options available in long and short click here. 

What fit are Marc Darcy suits?

All Marc Darcy suits are cut to a slim fit, this creates a more tailored silhouette that is flattering on most body types. A slim fit follows the shape of the body, tapering at the ankle and slightly cinching the waist. This allows for a stylish look while still being comfortable and wearable.

Why are the pockets stitched closed on a waistcoat?

Whilst the pockets can be un-stitched in order to hold a pocket watch or something very light, we would recommend that they be left stitched up, since the pockets are unfinished. They are not lined and not designed to be functional.

What if my suit doesn't fit me?

If your garments aren't the right fit for you, you have 14 days to return them for a refund or to exchange for a different size. Marc Darcy cannot offer any alterations. For minor adjustments, such as requiring a shorter leg length, we recommend a local tailor. Click here to learn more about our return & exchange policy.

Do you offer free delivery?

For orders to the UK we offer the option of free delivery on all orders. Delivery will typically take between 1-5 working days. If you require an express delivery, please choose the next day option at the checkout. For all orders outside of the UK a delivery fee will be charged.

For more FAQ's please click here.

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