Merrell Siren 3 GTX review
The Corescore is a score from 0-100 that summarizes opinions from users and experts. Below shows the distribution of scores for all hiking shoes.
This shoe has a 7% penalty on its expert reviews because it has fewer than 5 reviews. This is to avoid that shoes with few reviews unjustly receives high scores.
Learn moreVerdict from 1 expert & 100+ users
Pros
- Lightweight
- Comfortable
- Waterproof
- Stable on slippery rocks
- Durable
Cons
- Long break-in period
- Expensive

79% say it's true to size.
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Rankings
- Top 7% in hiking shoes
- Top 6% in Merrell hiking shoes
- Top 20% most popular hiking shoes
Comparison to similar hiking shoes
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Who should buy the Merrell Siren 3 GTX
Designed specifically for women, the Merrell Siren 3 GTX has won the hearts of outdoorsy girls who want a lightweight and comfortable shoe. It is a solid option if you:
- Prefer a hiking shoe that provides grip on wet and dry surfaces.
- Prefer a hiking shoe that has proven waterproof performance.
- Prefer a hiking shoe that provides gender-engineered alignment and comfort.
Excellent grip and durable
Much of the great qualities of this Merrell hiker can be attributed to its rugged outsole system. The Vibram Megagrip is made of a proprietary rubber compound that is very long-wearing. Its major qualities include stickiness which makes it easy for hikers to walk on rocky or uneven grounds.
Excellent traction
The lugs are 4.5mm deep for strong traction. The Megagrip outsole is also touted for its high level of traction on slippery, muddy, and wet surfaces. And just as it’s good on trails, the Siren 3 GTX also performs well on city streets.
Comfortable cushioning
Women’s feet are biomechanically different from that of men. Aside from being shorter and narrow, they tend to have a low instep height and a slimmer heel. For the Siren 3 GTX, Merrell has integrated QForm Technology in designing the midsole. It is meant to provide stride-specific cushioning for female feet.
Shock-absorbing cushioning
The QForm works by absorbing shock in the heel and centering it on contact to improve stability. It also provides cushioning on the toe area for added comfort.
Excellent arch support
The shoe also comes with a removable EVA insole that offers support to all three arches of the foot.
High abrasion resistance
This women’s hiker has an upper made of TPU and mesh. TPU (Thermoplastic polyurethane) has special properties that make them a popular choice for footwear products. These include high abrasion resistance, high shear strength, and high elasticity.
Breathable and waterproof
The mesh fabric has significant breathability and quick-drying properties. The Merrell Siren 3 GTX has the Gore-tex lining that acts as a waterproof barrier.
Secure fit
The Merrell Siren 3 GTX has the Gore-tex lining that acts as a waterproof barrier. Lastly, the shoe features a molded TPU heel counter for protection, bellows tongue for keeping the debris out, and a web lacing system for a secure fit.