Size Guide

Measuring Tips to Assure The Best Fit


A: Bust

With arms at sides, place tape measure under your arms and run it around the fullest part of the bustline and across the shoulder blades.

C: Hips

With feet together, run tape measure around the fullest part of your hips/seat, about 7 to 8 inches below your waistline.

Undersea Bikini sizes are designed to fit the following body measurements:


All dimensions are given in cm!

Our size guide is what we recommend our swimwear would fit, not the actual measurements of the product.

Please keep in mind that this size chart is only to be used as a guide. If you have any further questions, please contact us via so we can make sure you have the perfect fitting bikini!


Thong Bottom (ORANGE)

Ft11,488.00 inc. VAT

If you hesitate between two sizes, always go with the larger one as our sizing is quite small.

Feeling peachy?! Our most popular Thong Bottom is cheeky, yet tasteful with minimal coverage that is perfect for tanning. Once you’ve tried it, it’s hard to go back to anything else! All of our bottoms are totally seamless and match multiple separate tops of varying color and style.

  • Hand made with love
  • Minimal coverage
  • Low rise, cheeky cut to make your butt look fuller
  • Seamless design to avoid cutting in
  • Premium quality double fabric
  • Dry fast, chlorine resistant and UV protective
  • 90% ECONYL® Regenerated Nylon, 10% Elastane (Lycra Extra Life)

Model is wearing size medium.

Size Guide

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