Our verdict


Women who value comfort and protection from the elements may find this hiker a useful option for outdoor excursions. Its versatile design and lightness also garner praise from those who have worn this Merrell hiker. However, there are those who lament the lack of cushioning of this shoe, especially when worn on uneven terrain.


  • Remarkably comfortable
  • Effective waterproof liner
  • Versatile hiking shoe
  • Lightweight
  • Amazing arch support
  • No break-in period


  • Subpar cushioning
  • Narrow toe box
  • Lack of breathability

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 that gives female hikers comfort and performance during single-day trips. An M Select Dry laminate is integrated into its mesh and thermoplastic polyurethane (TPU) upper, providing water protection. Moreover, it is treated with the brand’s M Select Fresh technology which keeps 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 exclusive to women. It is equipped with a conventional lacing system, which allows wearers to achieve a secure and personalized fit. A Hyperlock molded TPU counter positioned in the rearfoot area keeps 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 that allows 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 that render multi-directional traction on both wet and dry terrain. The sole is furnished with a heel brake and a grooved rearfoot area, providing extra stopping power when tackling downhill conditions. Its front section covers an area of the forefoot zone which protects 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, delivering 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 which optimizes durability. The latter also grants added protection from various trail dangers. 

Merrell Siren 3 Waterproof upper


A patented M Select Dry membrane integrated into the upper prevents 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 is easy to wear

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

Merrell Siren 3 Waterproof easy to wear

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