Long Sleeve Swimsuit Black - Monroe

Size Guide

Our sleek, elegant and versatile longsleeve swimsuit. For surfing, swimming or simply styling under denim shorts at the poolside bar this piece is designed to offer easy poolside style and what's more - it's incredibly flattering (especially if you are a little arm conscious).

Our Monroe shape is designed to fit C-E cup busts.


This item is currently in production in our London studio. Preorder for dispatch w/c 7th June.

Not sure about size?
  • Fits true to size. If between sizes, go up a dress size. 
  • Built-in bust support including luxe under-bust elastic for lift and shape.
  • Elegant boatneck finish to sit across the collarbone.
  • Super soft powermesh sleeves and hips for a sculpted silhouette.
  • Medium cut on the leg with flattering but full bottom coverage and over-hip mesh to elongate the leg.
  • 25cm back zip for ease of getting swimsuit on and off.
  • Image 1 - Lucy wears a size 18 Hendricks
  • Image 5 - Deb wears a size 14 Monroe
  • Our Monroe model Amanda is 5'10 / 178cm tall. She usually wears a UK size 14 and a 36D bra. Shown here wearing a Deakin and Blue size 14 Monroe.
  • Super soft, high quality, sustainable Italian Lycra® with sleeves and hips made of soft & sculpting Italian powernet mesh.
  • Lycra® made from a recycled yarn called ECONYL® - made from regenerated waste such as old fishing nets and industrial plastic scraps.
  • High quality, water resistant YKK zip in the back of the suit for ease of getting on and off.
  • Durable and designed to last. Our chosen Lycra® is twice as resistant to chlorine, salt water and oils than standard Lycra. Full UV protection.
  • Designed and manufactured responsibly in London, UK.
  • Rinse after every use and hang to dry. Machine wash at 40° after every 2-3 uses. See full details on how to care for your swimwear.
  • 78% Recycled Polyamide, 22% Elastane.
Customer Reviews
4.8 Based on 10 Reviews
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Filter Reviews:
    United Kingdom
    Very nice swimsuit

    I have a cross back which I love but after wearing twice I realised that the bottom coverage was getting tricky when I swam so I sized up for this one- it’s a really nice swimsuit.

    United Kingdom United Kingdom
    The best costume I've ever owned!

    I have wanted a Deakin and Blue costume for ages and finally treated myself and I wasn't disappointed! The fitting is amazing and so flattering. I have worn it so much sea swimming and the quality is excellent.

    United Kingdom United Kingdom
    It's love!

    When I unwrapped my new bathers, I did wonder what all the fuss was about. It looked just like the sort of leotard I had to wear for much disliked gym at school. I didn't wear it for a while as the weather was warm, and I still wasn't sure. But last weekend, a chilly one, I really needed to get out there, so I put on my Monroe and headed out. It was very comfortable, it looked pretty good, it felt lovely when I was swimming and was the object of some envy. Easy to put on and to undo, flattering - I love it. I won't wait for chilly weather before wearing it again.

    Karen T.
    United Kingdom United Kingdom
    not me! mine is nice but sadly not long sleeved

    I didn’t know you had a long sleeved swim suit - wish I had!

    United Kingdom United Kingdom
    Should have sized up!

    If I’d read the size guide before ordering I would have seen that for longer torsos it’s best to size up! Ordered the 14, and I’d like a little more length but overall this is a beautiful costume. Incredibly stylish and well made. I’m very self conscious about my upper arms and never imagined I would find swimwear that gave me coverage and looked this good! Looking forward to using it sometime soon!

    Did you know?

    Our award-winning swimwear has been featured in The Guardian, The Times, The Telegraph, Women’s Health & more

    Here for a good time and a long time; our swimwear is thoughtfully designed to last season after season, swim after swim

    We have over 500 5* reviews for our products on our website, Google & Facebook - our customers love what we do!

    We offer free delivery and returns in the UK on all orders over £100: even more reason to treat yourself