Verdict from 100+ user reviews

8 reasons to buy

  • Most owners of the Merrell Siren 3 Ventilator mentioned that it is a comfortable pair of hiking shoes
  • This Merrell offering provides good all-around support, based on a customer review.
  • A pleased wearer stated that she is impressed with the shoe’s barely-there feel. She added that it feels very light.
  • The quality build of the Siren 3 Ventilator is positively received by plenty of users.
  • This Merrell low-top hiker is a budget-friendly shoe for outdoor use.
  • The M Select Fresh antimicrobial lining of the Siren 3 Ventilator keeps the foot dry and fresh. 
  • The outsole of this hiker is made of Vibram Megagrip compound for a sticky ride.
  • The unique-to-Merrell Hyperlock is a molded TPU heel counter that adds security on the trails.

1 reason not to buy

  • An online buyer has to return the Siren 3 Ventilator from Merrell because she does not like its style.

Bottom line

Merrell’s Siren 3 Ventilator succeeds in providing female outdoor lovers with a reliable trail companion. This lightweight low-cut hiker receives positive remarks, thanks to its unwavering comfort, all-around support, and excellent build. These features, when partnered with the shoe’s affordable price, odor-free interior and grippy outsole, will be able to win the hearts of lady wearers. However, its style may not impress everyone. To summarize, if willing to size down, the Siren 3 Ventilator from Merrell is a trail shoe that is likely to please.

Tip: see the best hiking shoes.

Good to know

  • The women’s Merrell Siren 3 Ventilator is a lightweight hiker that responds to the various challenges hurled by the trail at the female crowd. It is engineered with a gender-specific technology called Q Form 2 (also found in Merrell Siren Edge Q2 and Merrell Siren Sport Q2) whose responsibilities include keeping the heel centered and providing wearers with enhanced stability on the trail. It is also built with M Select Fresh to give owners a stink-free ride for longer.
  • Unlike the leather coverage seen its predecessor (the Siren 2 Ventilator), this new iteration now has TPU overlays. It also now has a proper heel counter for improved rearfoot support—something the old version didn’t have.
  • This current model still uses a Vibram outsole for surface traction. That said, its heel brake is more pronounced compared with the Siren 2 Ventilator’s.

The Merrell Siren 3 Ventilator is a low-cut shoe for female day hikers. Its relatively true-to-size fit is intended for users with standard-width feet. A secure and personalized lockdown is achievable via the shoe’s ghillie lacing.

Responsible for keeping the foot anchored in on slippery trails no matter the weather condition is the Siren 3 Ventilator’s Vibram Megagrip outsole. Multi-directional lugs (with a depth of 4.5 mm) dot its rubberized surface, offering enhanced grip performance for when the terrain gets a little too loose. On this grippy layer, users may also traverse downward slopes with extra confidence thanks to its toothy heel brake.

This hiking gear produced by Merrell promises a combination of comfort and protection on the trail with its heel-centering and foot-aligning dual-density midsole. The thickness of its heel zone translates to increased shock protection. It comes with a removable EVA midsole called Kinetic Fit Tri for extra support and cushioning underfoot.

The Siren 3 Ventilator’s low-top upper is one part mesh and one part TPU. It has an adequately padded interior and a debris-preventive bellows tongue. There is a strip of TPU overlay covering its heel for additional rearfoot support. Fabric loops, non-plated eyelets, and a flat synthetic lace form its lacing system.


How Merrell Siren 3 Ventilator ranks compared to all other shoes
Bottom 33% hiking shoes
All hiking shoes
Bottom 29% Merrell hiking shoes
All Merrell hiking shoes
Bottom 33% day hiking hiking shoes
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The current trend of Merrell Siren 3 Ventilator.
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Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.