Long Sleeve Union Suit - Navy




The signature DEN Union Suit with a chest pocket and full neck-to-back popper opening for easy access in and out!

NEW for AW23, the Navy Suit features our new, best-ever ring-style popper fastenings. The stretch cotton fabric and ergonomically designed seams help fit snugly to the body and maintain shape and structure wear after wear. 

NEW TALL SIZES - Available in RED and NAVY Long sleeve Union Suits on our M, L, and XL fits, our new 'TALL' option gives you about an extra inch on the arm, leg, and crotch. An option we suggest to give a little more 'wiggle room' for those with longer bodies or over 6'2'' tall. 

# Please note due to variations in batch production of fabric, the NAVY TALL garments are a slightly lighter shade than the regular-size garments shown in photographs.

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

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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

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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.