Full bottom, high waisted bikini bottoms with flattering ruching across the tummy and extra tummy control from our signature support lining.

Made from super soft recycled Econyl swim fabric with its superior shape retention for support. Fully lined for stability and performance.

Premium Italian Eco-friendly Swim Fabric:

• Outer fabric is 78% Recycled Nylon and 22% Elastane
• Recycled nylon produces up to 80% less greenhouse gas than material produced from oil and reduces landfill and ocean waste
• Excellent UV protection
• Ultra Chlorine Resistant, Sun Cream and Oil Resistant
• Super soft and shape retaining
• Handwash only with cool water and mild detergent

The key to your bikini doing what it has been designed to do is the fit. If it doesn't fit you properly, it won't support you properly.

The Core Bikini Top:

1. Back size:

The Core bikini top has been designed to be as close as possible to your bra size so you should order your standard back bra size (e.g. 36). Please note that the Core bikini has been designed to fit snuggly on your back size. We do not mean tight (that would be uncomfortable) but we do mean snug. The reason for this is:

1. A lot of the support from the bikini (and your every day bra) comes from the back. If the back is too big, you will lose support

2. Although the Core Swim bikini is fully lined (including the wings) to minimise stretch and maximise support when wet, we want you to be just as confident in your wet bikini as your dry bikini so we've designed it snug (again not tight!) so there is no need for those public adjustments when you get out of the pool.

Advice: If your bikini arrives and the back is not snug, consider a smaller size as you may get a better support. If it is too tight, please consider the next size up.

Note that if you size your back size up or down, you will also need to change your cup size to reflect this (it's called "sister sizing", see below).

2. Bikini cup size:

This is a sister sizing bra size chart. It is quite simple, if you wear a 36FF and the back is too tight, you would go up a back size and down a cup size to a 38F. Or, if the 36FF was too big, you would go down a back size and up a cup size to a 34G (see black arrows):

If the back fits you perfectly but the cup feels big then just go down a cup size to a 36F. Or, if the cup is not covering you as much as you would like or there is bulging, then go up a cup size to a 36G (see the red arrows).

Core Swim Mid Rise Bikini Bottoms:

Our bottoms are designed to fit on the mid-rise. As an estimate, we would say this is half way between your hips and your waist. 

The below table shows the size to order and the range of fit in cm of the circumference of your "mid-rise":

If you would like any further help, please contact us and we will be happy to help.

 International Size Conversions:

Delivery Charge to UK

• Delivery is free to UK mainland for orders over £100
• Orders less than £100 will be charged a delivery fee of £3.95 for mainland UK
• We use Royal Mail Tracked delivery service which will usually arrive within 2-3 business days from date of dispatch
• We do not currently offer next day delivery service
• We aim to dispatch orders within 3 working days

Returns Policy

• We want you to be completely happy with your Core Swim purchase but if you want to return it for any reason, then you can return it within 14 days of the date of delivery for a full refund (excluding any delivery charges)
• To start a return please sign into your account or follow this link Click here to start a return
• Returned items must be unused and unworn with hygiene stickers and security swing tags intact on the garments. Items we cannot resell due to damage whilst in your possession will not be refunded. Please return them in the same condition you would expect to receive them (be mindful of make-up, deodorant etc)
• The cost of return is at your own expense and will not be refunded unless the item is faulty
• Please retain a proof of postage with reference as we will be unable to issue a refund for goods that do not arrive back to us
• Once we receive your return we will issue a refund via the original payment method
• Your refund will be processed within 5 working days
• We do not currently offer exchanges as standard due to high stock turnover and availability of stock but please contact us if you would like to exchange and we will check stock and process manually if items are available
• Click here to start a return

Faulty Products

• Our products have been made by highly skilled seamstresses using only high quality materials and they have been put through rigorous quality control procedures
• We expect them to arrive with you in perfect condition and if cared for according to our care advice, to last you a long time.
• In the event that your product arrives faulty please contact us to arrange a return and refund
• In the event that your product develops a manufacturing fault after use, please contact us to discuss and to arrange a return. Please note that normal wear and tear is not considered a fault and we would expect that the garments had been cared for according to the care label instructions