Merrell
Women's Siren 4 Thermo Mid Zip Waterproof Boots
A winter-ready boot with a women's-specific fit that combines function and all-day wear-ability.
| US | UK | EU |
| 5 | 2.5 | 35 |
| 5.5 | 3 | 35.5 |
| 6 | 3.5 | 36 |
| 6.5 | 4 | 37 |
| 7 | 4.5 | 37.5 |
| 7.5 | 5 | 38 |
| 8 | 5.5 | 38.5 |
| 8.5 | 6 | 39 |
| 9 | 6.5 | 40 |
| 9.5 | 7 | 40.5 |
| 10 | 7.5 | 41 |
Free shipping on orders over $99 (oversize charges may apply) - Learn More
Fast and easy returns (no returns for final sale or heavily discounted items) - Learn more
Found a better price elsewhere? We guarantee you the best price on this item - Learn more
Premium gear is our promise
We were established almost 75 years ago by John Monod, a Swiss mountain guide and ski instructor. Quality outdoor gear is what our brand was built upon since 1949. Learn more.
Frequently Asked Questions
Have more questions? See all FAQ's
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Absolutely! We offer fast & easy returns on most products.
Exceptions include products 30% off or more, climbing gear, underwear & more.
Read our return policy here.
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All orders over $99 will qualify for free standard shipping within Canada.*
International shipping charges will apply for all non Canadian orders.
Oversize charges apply to larger items.
*See all shipping information here.
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Standard shipping estimates are as follows:
Alberta and British Columbia: 2-4 business days
Saskatchewan and Manitoba: 3 - 4 business days
All other provinces and territories: 5 - 9 business days