Signature Swimsuit Cobalt - Monroe

Size Guide

Our best-selling and award-winning Signature Swimsuit in bright cobalt blue made from our signature bonded fabric. The perfect cossie for your weekly swim and a good quality, trusted holiday staple. You'll love the built-in bust support and the flattering sweetheart neckline. 

Our Monroe shape fits C-E cup busts. For AA-B busts, shop The Hepburn. For F-HH busts, shop The Hendricks.

    • This swimsuit is designed to fit like a second skin and is "wiggled on" the first time you try it on. If you're bigger on the bottom/hips than on the chest and shoulders we recommend going up a dress size. 
    • Luxe under-bust elastic for lift and shape.
    • Medium cut on the leg with flattering but full bottom coverage.
    • 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. 
    • Super soft, high quality, sustainable Italian bonded Lycra® with neckline, waistline and hips highlighted in 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.
    • 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.

Dispatch w/c 8th July

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Customer Reviews
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    United Kingdom United Kingdom

    Best swim suit

    I loved it from the time I unpacked it. Fits so well. Washes well and most of all swims well.

    Cecile W.
    United Kingdom United Kingdom

    Lovely shop, lovely people.

    Lovely shop, lovely people. Nice and easy communication. Highly recommend

    Kate C.
    United Kingdom United Kingdom

    Dream swimsuit

    Gorgeous colour, fabric and cut, fabulous on holiday in Cornwall; paddle boarded, swam, canoed and it was perfect, held everything in place, lovely fabric..

    Sonya M.
    United Kingdom United Kingdom

    Love it!

    I absolutely love my Deakin and Blue Swimsuit- I now have 4 - as a larger woman they are flattering and I feel confident and less self concious in them, as well as they are brilliantly made and durable, I outdoor swim most days so they get put through their paces.

    Polly M.
    United Kingdom United Kingdom


    Thanks for making a swimsuit that makes me feel amazing and warrior-like for my wild swims. I’m not small and I don’t have a bikini body but I feel absolutely kick-*** in this. Thank you

    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