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150 Siren Bikini
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Merino Blend

150 Siren Bikini

€39,95

Color : Umber

10 Colors Available

Size :

€39,95

IB103164738-1

150 Siren Bikini

€39,95

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Complete The Look

150 Siren Bikini

€39,95

Details

Soft and stretchy merino wool underwear with a modern slim fit, the Siren Bikini features our corespun fabric that’s incredibly soft and durable.
Features & details
  • Merino Corespun - merino blend regulates body temperature in all weather conditions.

  • Layer Underwear
  • Style IB103164738
  • Product weight Small= 32 g / 1.12 oz

Good for:

  • Snow Sports
  • Hiking
Fabric & care
Fabric content

83% Merino Wool/ 12% Nylon/ 5% Elastane, Exclusive of decoration

Warmth system: 150
  1. 75
  2. 150
  3. 200
  4. 260
  5. 300
  6. 460+
Merino fiber micron: 18.9µ
  1. 15.5µ
  2. 16.75µ
  3. 18.9
  4. 19.25µ
  5. 20.5µ
  6. 21.75µ
  7. 23.0µ
  8. 25.5µ
Care

Machine wash cold gentle cycle. Wash with like colors. Do not use softeners. Do not bleach. Do not tumble dry. Line dry in shade. Cool iron. Do not iron print. Do not iron decoration. Do not dry clean.

Fit & sizing

Model measurements

Height: 177cm / 5'10". Waist: 65cm / 26". Daiane is wearing size S.

Slim Fit

A snug, close-to-body fit for low bulk layering.

What is Merino?
Merino is super lightweight, soft, non-itchy, non-clammy, warm in the cold and cool in the heat, and has a miraculous ability to resist odour. Because it was made in the mountains rather than in a petrochemical laboratory. Merino wool fibre is naturally renewable, recyclable and biodegradable*.
  • Naturally odor-resistant
  • No-itch comfort
  • Regulates body temperature
Delivery & Returns

Delivery

Standard delivery: free for all order over £ 40. Delivery in 5-7 days, from Monday to Saturday, during working hours.

Please visit our Delivery page and find out more about the ways in which you can receive our products.

Returns


You have 30 days from delivery to follow our quick and easy return procedure.

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Overall rating: 4.6165414 / 5 from 798 reviews.

AI Generated Review Summary

The 150 Siren Bikini is praised for its soft and stretchy merino wool fabric, which is incredibly soft and durable. Customers appreciate the beautiful colors and the quick drying feature, making it a top choice for travel. However, there are differing opinions on the cut and size, with some recommending going a size up.

Summary topics

  • Color: 5%
  • Fabric: 6%
  • Feel: 6%
  • Quality: 5%
  • Fit: 21%

Review topics: ["fit","size","model","problem","weight","weather","quality","coverage","fabric","material","looks","pants","wear","delivery","design","value","feel","durability","movement","colour","comfort","style","shape","price","moisture","medium","summer","works","comfy","band"].

Review highlights

  • "Fabric is not itchy and the fawn heather colour is a good nude shade for fair/medium skin tones." — NYLondon
  • "I love this underwear, nice shape, good quality, light and quickdry!" — AnneN
  • "Loved the Fawn Heather color and the fabric is soft with good stretch." — 1234b

Reviews

Attention à la taille

"Magnifique matière. Le bikini ne se sent pas. Le bémol je fais du L et là le Siren en L tombe, glisse sur le bas de mes fesses. C'est ennuyeux. Dommage car je les adore. Je pense recommandé une taille en dessous (au moins)."

— Mélanie G. (3/5)

These are awful. I have

"These are awful. I have probably a dozen pairs of Icebreaker bikini & hipkini briefs. I love their breathability, but have always been frustrated by how quickly they develop holes. This is the worst pair I've had by far (passion color, 150 merino). They developed a number of holes on the first wash."

— Lina H. (1/5)

I purchased the Women’s Merino

"I purchased the Women’s Merino 150 Siren Bikini for my wife, and she absolutely loves them. The merino wool is incredibly soft and breathable—nothing like traditional wool that can feel itchy. They’re lightweight, comfortable, and perfect for everyday wear, whether at home, traveling, or layering for outdoor adventures. She especially appreciates how well they regulate temperature and wick moisture, keeping things fresh throughout the day. The fit is flattering and stays in place without digging in or bunching up. They also wash and wear really well, maintaining their shape and softness over time. Icebreaker has really mastered comfort and practicality with this design. Highly recommended for anyone looking for premium-quality, natural-fiber underwear that feels as good as it performs."

— Joshua N. (5/5)

Very comfortable

"Most comfortable underwear ever."

— Ashley (5/5)

My favorite briefs!

"My favorite briefs!"

— Ingrid K. (5/5)

Perfect merino undies!

"I've learned that merino underwear are essential for travel. Unlike cotton underwear that usually don't dry overnight and need assistance of a hair dryer (if available), merino underwear are dry and ready in the morning. We only need to have two pairs-- one to wear, one to wash. I like the fit, comfort, and color of the Siren Bikini."

— Merino F. (5/5)

Featherlight and warm!

"Featherlight and warm!"

— Sibylle Z. (5/5)

perfect

"perfect"

— Johanne B. (5/5)

Love these undies!

"I love these undies. This is not my first review for them. This color is a little muted, but that's probably a good thing to add to the collection. Highly recommend for fit and comfort— five stars."

— April (5/5)

Best underwear in the world!

"I've been wearing Icebreaker bikini underwear for years and can't imagine ever wearing anything else."

— Goody (5/5)

Q&A