Who should buy the Merrell Siren 3 Waterproof

The Merrell Siren 3 Waterproof may impress female outdoor lovers with its strengths, granted its insole is replaced with a more cushioned one. It is a solid option if you:

  • Prefer a hiking shoe that provides comfort and excellent performance for female hikers.
  • Prefer a hiking shoe that provides water protection and can keep the users fresh during an adventure.
  • Prefer a hiking shoe that supplies surefootedness on all types of terrain.

Merrell Siren 3 Waterproof logo

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The Siren 3 Waterproof is a below-the-ankle outdoor shoe designed by Merrell to give female hikers comfort and performance during single-day trips. An M Select Dry laminate is integrated into its mesh and thermoplastic polyurethane (TPU) upper for water protection. Moreover, it is treated with the brand’s M Select Fresh technology to keep the user’s foot fresh during an adventure.

Merrell Siren 3 Waterproof logo 1

The footgear’s Q Form 2 dual-density ethylene-vinyl acetate (EVA) midsole yields gender-specific cushioning to women. Its Vibram Megagrip outsole, meanwhile, supplies outdoor lovers with surefootedness on virtually all types of terrain.

Size and fit

The Merrell Siren 3 Waterproof is a low-top day hiking shoe made for women. It is equipped with a conventional lacing system, which allows wearers to achieve a secure and personalized fit. A Hyperlock molded TPU counter is positioned in the rearfoot area to keep the heel from moving in its place.

Merrell Siren 3 Waterproof sizes

Excellent ground adherence by Vibram Megagrip outsole

This waterproof shoe for hikers sports a Vibram Megagrip outsole for ground adherence. It is made of a specially formulated Megagrip compound, making it durable and abrasion-resistant. 

Merrell Siren 3 Waterproof outsole

Provides multi-directional traction on wet and dry surfaces

Its profile is filled with 5mm-deep rectangular lugs to render multi-directional traction on both wet and dry terrain. The sole is furnished with a heel brake and a grooved rearfoot area for extra stopping power when tackling downhill conditions. Its front section covers an area of the forefoot zone to protect the user’s toes from stubbing.

Merrell Siren 3 Waterproof outsole 1

Delivers a cushioned ride specific to women

The Merrell Siren 3 Waterproof comes with a proprietary Q Form 2 dual-density midsole made of EVA foam. Its construction comes with a heel-centering technology that delivers a cushioned ride specific to women.

Merrell Siren 3 Waterproof midsole

Comfortable underfoot cushioning

 It works in tandem with a patented Kinetic Fit Tri insole to deliver extra cushioning and underfoot comfort. The contoured design of this removable component also offers support to the foot’s three major arches.

Merrell Siren 3 Waterproof insole

Optimizes durability and provides trail danger protection

The Merrell Siren 3 Waterproof features an upper made of mesh fabric, making it a lightweight shoe for hikers. It is reinforced with TPU overlays and a rubber rand to optimize durability. The latter also grants added protection from various trail dangers. 

Merrell Siren 3 Waterproof upper


A patented M Select Dry membrane is integrated into the upper to prevent water intrusions. Moreover, its design also allows for excess moisture and heat to pass through.

Merrell Siren 3 Waterproof upper 1

Merrell Siren 3 Waterproof secures fit and easy to wear

This Merrell outdoor shoe for hikers uses a Hyperlock molded TPU counter for heel support. Its lacing system comes with a series of webbing loops to help the wearer manage the footgear’s fit. A pull tab is found at the back of the collar to facilitate easy on and off.

Merrell Siren 3 Waterproof easy to wear

Nice to know

Facts / Specs

Weight: Women 10.4oz
Use: Day Hiking
Cut: Low cut
Collection: Merrell Siren
Features: Lightweight / Orthotic friendly / Removable insole
Waterproofing: Waterproof
Width: Normal / Normal, Wide

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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.