Siren 3 GTX Women’s Hiking

The Merrell Siren 3 GTX Women’s Hiking Boot delivers waterproof protection, trusted stability, and hiking-specific support designed for the unique shape of a woman’s foot.

Size: 4
Sizing guide

Size Conversion Chart

Fit note: Sizing can vary slightly by brand and style. If you’re between sizes, we usually recommend going up half a size.

Wide fit: Wide fit options are available in selected styles.

EU UK US (Men) US (Women)
36 3 5
37 4 6
38 5 7
39 6 7 8
40 6.5 7.5 8.5
41 7 8 9
42 8 9 10
43 9 10 11
44 9.5 10.5 11.5
45 10.5 11.5 12.5
46 11 12 13
47 12 13 14

Need help? Message us and we’ll recommend the best fit based on your foot width and support needs.

 


Find Your Perfect Fit (It’s Not Just Size)

Most people think they need a bigger size…
but in reality, they need a wider fit.


Understanding Shoe Widths

Width What It Means How It Feels
F Narrow Snug, slim fit
G Standard Comfortable for most
H Wide More room across the foot
K Extra Wide Maximum space & comfort

👉 Quick tip:
If your shoes feel tight at the sides—but long enough—you likely need a wider fit.

 

Sale price€80.00 Regular price€150.00
Save €70.00

Tax included. Shipping calculated at checkout

🔒 Secure checkout 📦 Ships in 24hrs

Merrell Siren 3 GTX Women’s Hiking Boot

Waterproof Confidence. Engineered Stability. Built For Women Who Explore.

The Merrell Siren 3 GTX is expertly designed to support the way women move on the trail. Combining GORE-TEX® waterproof protection, hiking-specific stability, and durable traction, this boot delivers reliable comfort whether you're tackling rugged terrain or heading out on a long countryside walk.

Built on a women-specific last, the Siren 3 GTX helps improve alignment and natural stride while reducing fatigue — so you can stay focused on the journey, not your feet.

Why You’ll Love It

GORE-TEX® waterproof membrane – Keeps feet dry while remaining breathable
Women-specific fit – Engineered to match the contours of a woman’s foot for better comfort and support
Vibram® outsole – Exceptional grip and traction across uneven or slippery terrain
Air Cushion heel – Absorbs shock and enhances stability
Reinforced protection – Durable construction with protective toe cap for trail safety

Perfect For:

✔️ Hiking and hill walking
✔️ Wet and unpredictable weather
✔️ Travel and active holidays
✔️ Long-distance comfort
✔️ Walkers who value stability and protection

Fit & Feel

  • Fit: Secure and supportive women’s fit

  • Support: Excellent ankle and underfoot stability

  • Cushioning: Protective with shock absorption

  • Traction: Strong grip for mixed terrain

  • Best Use: Hiking, trekking, and outdoor adventure

Specialist Fit & Comfort Promise

Every product is selected or fitted to reduce stress on feet, knees, hips and back.

Trusted Quality Only

We only stock products we would confidently recommend to our own patients and families.

Quality You Can Trust

Produced in certified facilities with strict quality control for peace of mind.