Vest Union Suit - Bold Blue




The lightweight cotton stretch fabric will keep you cool at night and is also perfect to wear under shorts or jeans during the day!

Featuring a small embroidered logo on the chest pocket and the signature DEN full neck-to-back popper opening for easy access in and out!

The stretch cotton fabric and ergonomically designed seams help fit snugly to the body and maintain shape and structure wear after wear. 

 Made in Turkey using BCI-certified sustainable cotton.

+ Get a DEN Jock or pair of Socks for HALF PRICE when added to your Union Suit order!

( Discount automatically applied at checkout, one promotional item per Union Suit. Cannot be used in conjunction with other promotions )

Find Your Fit

Not sure what size to go for? Just answer a few questions and we'll reveal your DEN fit.

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Shipping & Returns

Our post dispatches are 4PM Mondays and Thursdays. All orders recevied before 3PM on these days will be sent the same day.

  • FREE UK Delivery over £80
  • FREE US Delivery over $150

Read more about Postage & Shipping.

Returns & Exchanges.

Care & Composition

98% Cotton, 2% Elastane

About Our Fabrics


All of our Union Suits and socks are made with 100% BCI certified cotton.


We actively look to reduce packaging used in the transportation of our goods from factory to us then to you as much as we can.


We source as close to base as we possibly can to minimise the global footprint of our goods !


In all garment production, there will be factory seconds - garments with the odd broken popper or missing row of stitch

Read more about Sustainability at DEN.