Merrell Siren 4 Thermo Mid Zip WP hiking boots

Merrell Siren 4 Thermo Mid Zip WP hiking boots

The model measures 170 cm and wears the size EU 38.

Merrell Siren 4 Thermo Mid Zip WP hiking boots

147.99 €

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Features of Merrell Siren 4 Thermo Mid Zip WP

Trusted by over 25 million satisfied customers worldwide

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Specifications Merrell Siren 4 Thermo Mid Zip WP

Features of Merrell Siren 4 Thermo Mid Zip WP

Color Brown

Color

Brown

Features Thermal

Features

Thermal

Waterproof

Gender Women

Gender

Women

Recommended Use Hiking

Recommended Use

Hiking

Product description of Merrell Siren 4 Thermo Mid Zip WP hiking boots

Description summary

Experience ultimate warmth and a perfect fit with the Siren 4 Thermo. Built on 25 years of women´s-specific design, it cradles your foot for superior comfort and stability on the longest hikes. Stay toasty with 200g of insulation and a NASA-inspired SOLARCORE® aerogel insole. A waterproof upper keeps you dry, while the new medial zipper allows for easy on/off. Confidently tackle icy, slippery terrain thanks to the superior grip of the Vibram® IceTrek™ outsole with enhanced traction lugs

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With 25 years of Merrell´s women´s-specific fit, the Siren 4 Thermo is uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability even on the longest hikes with 200 grams of added insulation for warmth and protection.

Now equipped with SOLARCORE® insulation, lightweight insulation material initially designed for NASA, you never have to worry about warmth.

The all-new medial zipper provides easy on/off, a new improvement made directly from customer feedback.

Merrell waterproofing on the upper will keep your feet dry.

With Vibram IceTrek underfoot, traction remains consistent under the wettest, most slippery conditions.

For the first time ever incorporating Vibram traction lug for enhanced grip on uneven terrain.

Features and Benefits:

- Waterproof membrane seals out water and lets moisture escape.

- Waterproof full grain leather and knit upper.

- 100% recycled laces and webbing.

- Heavy-duty, Waterproof, YKK medial zipper for easy on and off.

- Bellows tongue keeps out debris.

- Protective and abrasion resistant rubber heel and toe cap.

- 100% recycled fleece lining.

- 200 grams Primaloft® Gold Eco Series synthetic insulation.

- SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin.

- 100% recycled mesh footbed cover.

- Cleansport NXT™ treated for natural odor control.

- 5% recycled removable PU footbed.

- FloatPro™ Foam midsole for lightweight comfort that lasts.

- Vibram Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces.

- Vibram traction lugs specifically designed to increase traction and shed debris with each step.

Insole material:

SOLARCORE® Aerogel.

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What our customers are saying about Merrell Siren 4 Thermo Mid Zip WP hiking boots

These high-quality shoes are praised for being exceptionally warm, waterproof, and comfortable. Perfect for mountain walking or everyday winter use, they feature a beautiful design and provide excellent grip on dry surfaces. The fit is consistently reported as true to size, ensuring a perfect match

They look perfect

2025/12/15

Ronie

Try before you go out: Very comfortable, good size, high-quality construction, and seems to live up to its promises. We'll see how it performs on the road.

I recommend

2025/02/25

Helena

Very good, super comfortable and warm. I use them in my everyday life during these winter days.

Very happy

2024/12/19

IRENE

Perfect for walking in the mountains

Very good boots

2024/01/10

Lily

They are just like the photos. The size corresponds completely. I wear a 40 and I ordered a size 40 and it was perfect. Very good quality and very happy in general. They are beautiful.

I love them!!

2024/01/10

Lidia

They are beautiful and very comfortable. I have not tried them on roads yet, only on the street and in Nome they grip a lot on dry smooth ground. I have to try them in the mountains and in the wet. Very satisfied with the purchase. I recommend them. Very good qualities.

Good shoe

2024/01/08

Sand

Very good shoe, warm and comfortable. I got the wrong size, I had to return the shoes and order others in a larger size. All went well.

Great shoe

2023/12/01

Katja

Really great shoe: warm, waterproof and comfortable. Size matches normal shoe size perfectly. There are 5 stars for the shoe. Delivery also worked well, it just took a little longer. BUT the hidden costs!!! You should clearly point out at the checkout BEFORE you make the purchase that in addition to the price and shipping costs, the post office will subsequently charge a whopping 34CHF for customs!!! That's not ok! Because the shoe is just as expensive as here

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Merrell Siren 4 Thermo Mid Zip WP hiking boots

Features of Merrell Siren 4 Thermo Mid Zip WP

Merrell - Footwear - Boots

Specifications Merrell Siren 4 Thermo Mid Zip WP

Features of Merrell Siren 4 Thermo Mid Zip WP

Color Brown

Features Thermal

Waterproof

Gender Women

Recommended Use Hiking

Product description of Merrell Siren 4 Thermo Mid Zip WP hiking boots

Similar alternatives to this product

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Best sellers

Frequently bought together

What our customers are saying about Merrell Siren 4 Thermo Mid Zip WP hiking boots