Verdict from 100+ user reviews

6 reasons to buy

  • Lots of the Merrell Siren 3 Mid Waterproof reviews talk about its unbelievable comfort.
  • It fits like a glove, according to many users.
  • Several avid hikers have praised this boot for its good ankle and arch support.
  • Many customers are in love with the sleek design of this Merrel hiking footwear
  • Despite being a mid-top model, the Merrell Siren 3 Mid Waterproof hiking boots are incredibly lightweight.
  • It works great for walking in the woods or in rough terrain, say a couple of reviewers.

1 reason not to buy

Bottom line

Designed specifically for women, the Merrell Siren 3 Mid WP boots seem to fit the bill for female hikers looking for a sleek and stylish shoe that offers plenty of foot support, comfort, and protection. It also gets high marks for its lightweight yet durable construction, and a good grip that suits woody trails.

What's more, this boot is equipped with a waterproof membrane so it's always ready for adventures, rain or shine.


Tip: see the best hiking boots.

Good to know

  • Another reliable boot in Merrell's Siren Collection, this shoe features the M Select DRY impermeable membrane that seals water out and lets moisture escape.
  • It has a breathable mesh upper with TPU overlays for extra strength and durability. For its cushioning system, this boot makes use of the Q Form dual-density midsole with heel-centering technology for stability and comfort. 
  • This shoe is also powered by Vibram Megagrip sole that bites into different surfaces.

This mid-top hiker is constructed using a gender-engineered last to make sure that it fits a woman's foot perfectly. Its upper features padded tongue and collar, and an elastic mesh for a glove-like fit. The Merrell Siren 3 Mid Waterproof women's boot has a traditional lacing system with hook and webbing loops for a secure fit. There's also a pull tab at the back of the collar that helps get the foot into or out of the boot easily.

The Siren 3 Mid WP has the Vibram Megagrip outsole that is designed for hiking in all types of terrain. It has an aggressive lugging with a dept of 4.5 mm so it bites into the mud, loose dirt, and soil really well. The grooves on the heel help keep the boot stable when traversing uneven grounds.

Besides being shorter and narrower, women's feet tend to have lower insteps and slipper heels than men's. Additionally, women's Q-angle (the area just below the hip) leans on a slightly larger angle than men's, which increases pressure on the hips, knees, and back. This often results in pain or discomfort when walking. Taking this into consideration, Merrell has designed the Q-Form midsole which is specifically intended to deliver cushioning and support for female feet.

The Q-form midsole features a firm and supportive area to keep the foot centered, a second supportive area to keep it centered while the foot is lifted, and a soft region for cushioning as the wearer pushes off and takes another step. There's also cushioning in the toe area to help distribute the wearer's weight and pressure as she walks.

Additionally, the Siren 3 Mid WP comes with the Kinetic Fit Tri Removable insole that delivers comfort and arch support.

This boot features a mesh and TPU upper with a padded collar and bellows tongue for keeping debris out. Lining the shoe interior is the M Select DRY impermeable membrane that prevents water from getting in. Sweaty feet are a common thing during long hikes, especially in the summer. Luckily, the Siren 3 Mid is treated with M Select FRESH antimicrobial agents that reduce shoe odor.

Furthermore, this boot has the Hyperlock molded TPU heel counter that keeps the heel in place, thus, preventing blisters or pain caused by friction or heel slipping. Completing the upper is a lace-up closure with hooks and loops for a secure fit.

-The Merrell Siren 3 Mid Waterproof is a vegan-friendly product. 


How Merrell Siren 3 Mid Waterproof ranks compared to all other shoes
Bottom 21% hiking boots
All hiking boots
Bottom 23% Merrell hiking boots
All Merrell hiking boots
Bottom 19% day hiking hiking boots
All day hiking hiking boots


The current trend of Merrell Siren 3 Mid Waterproof.
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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.