Core Tie Side Bottom Black
Simplicity perfected. Our classic Triangle Bikini Bottoms in Black offers understated chicness in a timeless triangle shape. Adorned with signature Heidi Klein gold bamboo trims, the adjustable rope ties create a perfect fit for anyone.
This impeccably cut bikini is made from our gorgeous textured honeycomb sustainable fabric. We added exactly the right amount of coverage to make you feel confident where ever you are.
This go-anywhere, do-anything luxury bikini delivers unparalleled quality and will last for many holidays to come.
Our Triangle Bikini is part of the Core Swimwear Collection.
Shop the complete set here.
- Adjustable rope side ties
- If you prefer more coverage size up
- Bespoke gold hardware at the back waist and gold bamboo hardware
Product reference: COREHK0212|DRK-BLK




Bikini Size Guide
We have created this chart to help you find your Heidi Klein size based on your bra size.
Size | UK Dress Size | UK Cup Size |
XS | 6 | A/B |
S | 8 | B |
M | 10 | B/C |
L | 12 | C/D |
XL | 14 | D/DD |
Size | UK Dress Size | US Dress Size | EU Dress Size |
XS | 6 | 2 | 34 |
S | 8 | 4 | 36 |
M | 10 | 6 | 38 |
L | 12 | 8 | 40 |
XL |
14 | 10 | 42 |
Heidi Klein Size | UK Dress Size | US Dress Size | EU Dress Size | Height |
XS | 6 | 2 | 34 | Petite |
S | 8 |
4 | 36 | Standard |
M | 10 | 6 | 38 | Standard |
L | 12 | 8 | 40 | Standard |
XL |
14 | 10 | 42 | Standard
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