X-Back Swimsuit Black - Monroe

Size Guide

You loved this flattering style so much this summer that we're introducing it in classic black. Designed to adapt perfectly from lengths and laps to holiday lounging. With built-in bust support and a flattering scoop back for maximum tan, this piece is fast becoming a swim-wardrobe staple.

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


We are currently restocking this item. Preorder for dispatch w/c 13th December

Not sure about size?
  • This style is shorter in the body length. If you are long in the body, we recommend going up a dress size. For a fuller fit on the bottom we also recommend going up a dress size. 
  • Features luxe under-bust elastic for lift and shape.
  • Medium, flattering cut on the leg. 
  • Our Monroe model Amanda is 5'10 / 178cm tall and 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®.
  • Made from recycled yarn ECONYL® from regenerated waste such as old fishing nets and industrial plastic scraps.
  • Soft, stretchy, light and breathable. Perfect blend of muscular compression and comfort.
  • Durable and designed to last. 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 16 Reviews
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    United Kingdom

    X back swimsuit 12 Monroe

    I love this swimsuit. Bra size 32F so really struggle to find suitable swimwear and fit. The swimsuit is superb quality and provides excellent support. Customer service awesome. Thank you.

    United Kingdom United Kingdom

    Too short

    The x back swimsuit in black Munroe is a flattering shape, my only comment is that it is too short in the body.

    United Kingdom United Kingdom

    Fantastic, flattering and figure shaping.

    This is my third purchase of the X back costume. Two for me, teal and black and one for my daughter. We are both keen swimmers and these costumes are flattering and practical. For my second I went up a size to gain a longer body length. The larger size is still a great fit as the fabric is robust and stretchy and it smooths out all the bumps. So if you need a longer body length I recommend that you go up a size.

    Tracy H.
    United States United States

    Most Comfortable Swimsuit Ever!

    This is the second Deakin & Blue swim cozzie I have purchased and I liked it straight away. This suit is extremely well made and provides a great fit. I love the flattering design… especially for my older, rounder body!

    United Kingdom United Kingdom

    Lovely costumes.

    I am size 12/14 on the high street. I bought a crossover back in teal, size 14. It is lovely, feels sturdy and strong. Quite thick and a good overall body shape. I have kept it, however it is slightly short in the body. I bought another in black in the Black Friday sale. This time I bought a 16. The body length is better, and it is still a relatively neat fit. Both are very flattering. I would highly recommend, but think carefully about your body length and buy accordingly.

    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