Summer-weight Vest Union Suit - Black
Introducing our softest union suit yet ☀️
Meet the Summer 2026 Cotton/Lyocell Vest Union Suit — designed for summer days, warm nights, and effortless comfort.
Crafted from a luxurious cotton–lyocell blend, this new lightweight fabric feels silky-soft to the touch, fits perfectly on the body, and keeps you cool, breathable, and comfortable all day and night long. It’s the perfect balance of cotton’s familiar comfort and lyocell’s next-level softness and performance.
Designed with a tonal chest logo embroidery, racer back styling and full popper fastening from the neckline all the way down, around, and to the bum — it's the DEN Union Suit styling you know and love, remixed for the new season!
Naturally breathable, moisture-wicking, gentle on sensitive skin, and more wrinkle-resistant than pure cotton, this is our most comfortable summer union suit to date — made to move, lounge, sleep, and live in.
Once you put it on, you won’t want to take it off.
Not sure what size to go for? Just answer a few questions and we'll reveal your DEN fit.
Find your fit with out quiz now.
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
BCI COTTON
All of our Union Suits and socks are made with 100% BCI certified cotton.
MINIMAL PACKAGING
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.
CO2 EMISSIONS
We source as close to base as we possibly can to minimise the global footprint of our goods !
REPAIR & RESELL
In all garment production, there will be factory seconds - garments with the odd broken popper or missing row of stitch