X-Back Swimsuit Cobalt - Monroe

Size Guide

We're delighted to introduce this much loved style in a bright, bold Cobalt. 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.


Dispatched w/c 24th October

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 Berry usually wears a UK size 12 on top, a size 14 bottoms and a 32D bra. Shown here wearing a Deakin and Blue size 12 Monroe. (She's sized down for a cheekier fit on the bottom).
  • 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
5.0 Based on 9 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Write a Review

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    United Kingdom United Kingdom

    Fabulous swimsuit! Tips for E/F cup size.

    I love this swimsuit! Lots of compliments about the cross-back from friends at my swimming pool. I couldn't decide between cobalt and plum - both gorgeous, strong colours. I'm between cup size E/F. I first ordered a Monroe (cup C-E) because other swimsuits have quite a lot of stretch usually, but the D&B fabric is different: quite a firm hold, which once you get used to makes you feel wonderful! No saggy bits at all :) However, this means the Monroe wasn't quite roomy enough for me. I then ordered a Hendricks (cup F-H) in Plum which is a better fit AND now have the choice of colour too!

    Jill G.
    United Kingdom United Kingdom

    Deakin and blue- swimming feels new

    My 3rd purchase - they last for ages and never fail to give support and I have lost count of the number of questions “ where did you get your swimsuit?” Thank you Deakin and Blue for making my swimming feel new !

    United Kingdom United Kingdom

    A revelation!

    I’ve never spent so much on a swimming costume and was a little dubious of the hype, but it’s true - this X-back is the most comfortable I’ve ever worn - and supportive of my big bust. Worth every penny.

    United Kingdom United Kingdom

    Perfect fit

    This is my second costume. I cannot fault the quality and fit , superb.

    Faith M.
    United Kingdom United Kingdom

    Love this swimsuit

    The blue swimsuit is lovely and comfy. For a change the colour is just as it looks on the advert. It fits well and I feel secure and comfortable in it. When I have the spare funds I will buy another in a different colour as I swim a lot. The packaging it arrived in was lovely too.

    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