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Thalassa - Classic Cheeky Reversible Bikini Bottom

$55.00 SGD Regular price
Unit price
4 reviews

The Thalassa series is fully reversible to a beautiful electric blue colour!

Every surfer girl has a reliable pair of low-coverage cheeky bottoms that she will bring on every trip – this is our take on it. Our goal is for you to feel both cute and secured in the surf, so you can confidently ride the waves without worry. 

Featuring a seamless stitch system, these bottoms are anti-chaffing, ensuring maximum comfort during extended periods of wear. 

All designs are also double-lined with 200gsm swim fabric so nothing peaks through even when wet.

Our "Classic Cheeky Reversible Bottoms" are available in various colours and prints!

Made from high-quality and durable fabrics, locally sourced in Indonesia

  • Print fabric: 85% Polyester, 15% Spandex
  • Solid fabric: 80% Nylon, 20% Spandex
  • Reversible to a solid colour
Sizing Guide

🔥 General sizing tip 1: For all swimwear, a snug fit on land is a good indication that it is going to stay on in the water. This is because swimwear fabric stretches and becomes heavier when wet. So if it fits just nice on land = loose in water. Fits snug on land = it’ll be okay to surf or swim in without you worrying about the swimsuit falling or slipping off.


🔥 General sizing tip 2: If you are purchasing with the intent to surf or do other sports & NEED it to stay on, choose according to size chart. Otherwise, you may choose 1 size up for a more relaxed fit to lounge or lightly swim in.


🔥 Sizing tip for ONE-PIECE SWIMSUITS: If your top is size S & bottom is size M, you may choose either S or M depending on what you’ll mainly use the suit for. For better hold = choose size S. For more relaxed fit = choose size M.




The guide above was designed based on responses we've received on our Facebook group, the "Haikini Seasterhood". Search "size guide" in our FB group and browse the comments to find Seasters of similar measurements, and see what size they wear.

If you still need a personal recommendation from us, feel free to DM us on Instagram and we will get back to you during our working hours (9am to 5pm Singapore time).

Shipping Dates & Costs
  • Orders are processed everyday and estimated delivery date is 2-4 days after placing an order x
  • We ship worldwide

Approximate shipping costs (actual costs will be calculated at checkout)


$4 (QExpress, 2-5 working days)


$10 (7-10 working days)


$10 (Janio, 8-10 working days)

$20 (2-3 working days)


$10 (Tracked Airmail, 7-14 working days)

$27.70 (TNT Express Delivery, 3-5 working days)


$15 (PH Local Courier, 7-10 working days)

$25 (Aramax, 2-3 working days)

*Pre-ordering helps us as a small business to reduce wastage from over-production. Thank you for supporting Haikini!

Customer Reviews
5.0 Based on 4 Reviews
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Haikini Thalassa - Classic Cheeky Reversible Bikini Bottom ReviewHaikini Thalassa - Classic Cheeky Reversible Bikini Bottom Review

Best surfproof bikini I own!

I have been trying out many different bikinis for surfing and honestly haikini does the job the best! I can finally focus on surfing without worrying about any wardrobe malfunction, and on top of that, it looks stunning and flattering as well!

Philippines Philippines
Haikini Thalassa - Classic Cheeky Reversible Bikini Bottom ReviewHaikini Thalassa - Classic Cheeky Reversible Bikini Bottom Review

very flattering

Cheeky coverage and very flattering on the booty! Reversible pattern so you basically get two bikinis in one. Feels secure too when I wear it for water sports!

Roselle P.
Singapore Singapore

It has not arrived

Would you be able to update me when it will arrive? Thank you!

Victoria W.
Singapore Singapore

great customer service

initially ordered an incorrect size and had to make an exchange. sophia and team were prompt in explaining the exchange process and making sure the exchange went smoothly. thanks to them, managed to get my exchange swiftly done in time for my holiday! :)

rachel k.
Singapore Singapore

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