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Merrell
Siren 4 Thermo Mid Zip WP Boot - Women's

4.025 out of 5 stars
40 Reviews
$179.95
Color:Black

Size:

Size Chart

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Why We Like The Merrell Siren 4 Thermo Mid Zip WP Boot

When we won't let winter interrupt our hiking addiction, we slip into the Merrell Siren 4 Thermo Mid Zip WP Boot to keep from slipping and sliding on the trail. This winter hiking boot is snowproof with its waterproof membrane and full-grain leather uppers, and it's built to keep our feet warm with 200g Primaloft Gold Eco insulation packed inside. Snow and ice would keep us inside, either, thanks to Vibram Arctic Grip rubber outsoles, which are made for cold and slippery winter conditions. Made with a women-specific fit, the Siren 4 Thermo lets us enjoy 4-season hiking with warm feet and good grip on snowy and icy surfaces.


Details

  • Insulated winter hiking boots with a women-specific fit
  • Leather uppers are durable and weather resistant
  • Proprietary membrane adds breathable waterproofing
  • Medial zippers make boots easy to slip on and off
  • 5mm lugs dig into snow for better traction
  • Moderate 8mm heel to toe drop cushions our heels
  • Protective toe cap to prevent stubbed toes
  • Cleansport NXT treatment for odor control
  • Item #MERZ2TH
Responsible Collection
Recycled/Repurposed
Upper Material
full-grain leather, synthetic knit
Waterproofing
Merrell Dry
Insulation
200g PrimaLoft Gold Eco (recycled polyester)
Lining
100% recycled fleece
Closure
lace, zipper
Footbed
PU, Solarcore Aerogel
Midsole
FloatPro Foam
Sole
Vibram Arctic Grip
Shaft Height
ankle
Claimed Weight
[single] 1lb 3oz
Manufacturer Warranty
limited lifetime
Activity
winter hiking, casual

Overall Rating

4 based on 40 ratings

Review Summary

1 Stars - 3 reviews
2 Stars - 3 reviews
3 Stars - 6 reviews
4 Stars - 6 reviews
5 Stars - 22 reviews

What do you think about this product?

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5 out of 5 stars

April 24, 2024

Never without Merrells

Always buy Merrell for outdoors and work on our alpaca farm. Never have to worry about fit or even breaking them in! They’re always comfortable and durable!

user image
Elizabeth
Merrell

Originally reviewed on Merrell

5 out of 5 stars

April 14, 2024

One of my favorite Merrell boots.

Very comfortable, light, warm enough for winter time, and look great. I wear them for hiking and walking. I love them!

Tatiana
Merrell

Originally reviewed on Merrell

2 out of 5 stars

March 31, 2024

to hard and stiff

these were just to hard and stiff on my ankles and felt very uncomfortable when I tried them on...other wise I do love Merrill boots..I have an older pair that has just a pull on and has soft fake fur filling around the sides so very sorry that I had to return them

Merrell

Originally reviewed on Merrell

4 out of 5 stars

March 26, 2024

Siren 4 Thermo Mid Zip Waterproof

Love the look, and comfort of these boots. Received the order really fast.

Diane Carol
Merrell

Originally reviewed on Merrell

5 out of 5 stars

March 12, 2024

Comfortable and warm for artic adventure

I packed these for a trip to Finland above the artic circle in winter. Very comfortable, very warm, and very lightweight! Highly recommend!

Ali T
Merrell

Originally reviewed on Merrell

5 out of 5 stars

March 8, 2024

Nice boots! Will recommended.

I just got it now. And im so happy to my purchase. I haven't tried it yet but it looks like so comfy.

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Jona
Merrell

Originally reviewed on Merrell

5 out of 5 stars

February 21, 2024

Love these shoes

Very comfortable and warm! I wore them all day while standing and walking and my feet felt great.

s
Merrell

Originally reviewed on Merrell

5 out of 5 stars

February 19, 2024

Comfy and warm

Took these babies to Colorado. Kept my feet nice and worn in 20 degree weather!

Ellie
Merrell

Originally reviewed on Merrell

2 out of 5 stars

February 18, 2024

Okay winter boots

They are okay not exactly what i thought when looking at the picture online. My feet were warm.

LLmom
Merrell

Originally reviewed on Merrell

5 out of 5 stars

February 17, 2024

Warm and Cozy

I work inside and outside and needed a boot that could be warm and handle the changing weather as well as comfortable inside. This did the trick.

Michele S
Merrell

Originally reviewed on Merrell