Merrell Womens Siren 4 Thermal Mid Zip Waterproof Boot zoom in
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Merrell Women's Siren 4 Thermal Mid Zip Waterproof Boot

$179.95

With 25 years of Merrell®'s Women's-specific fit, the Siren 4 Thermo is uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability even on the longest hikes with 200 grams of added insulation for warmth and protection. Now equipped with SOLARCORE® insulation, lightweight insulation material initially designed for NASA, you never have to worry about warmth. The all-new medial zipper provides easy on/off, a new improvement made directly from customer feedback. Merrell® waterproofing on the upper will keep your feet dry. With Vibram® IceTrek® underfoot, traction remains consistent under the wettest, most slippery conditions. For the first time ever incorporating Vibram® traction lug for enhanced grip on uneven terrain.

  • Waterproof membrane seals out water and lets moisture escape
  • Waterproof full grain leather and knit upper
  • 100% Recycled laces and webbing
  • Heavy-duty, Waterproof, YKK medial zipper for easy on and off
  • Bellows tongue keeps out debris
  • Protective and abrasion resistant rubber heel and toe cap
  • 100% Recycled fleece lining
  • Primaloft® Gold Eco Series synthetic insulation
  • SOLARCORE® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin
  • 100% Recycled mesh footbed cover
  • Cleansport NXT™ treated for natural odor control
  • 50% Recycled removable PU footbed
  • FloatPro™ Foam midsole for lightweight comfort that lasts
  • Vibram® Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces
  • Vibram® traction lugs specifically designed to increase traction and shed debris with each step

Product Features:

Insulation 200 g Primaloft® Gold Eco
Upper Waterproof Full Grain Leather; Knit
Footbed Polyurethane, removable
Lining 100% Recycled Mesh
Insole SOLARCORE® Aerogel
Weight 1 lb. 3.4 oz. (540 g)
Outsole Vibram® Icetrek with 5mm lug traction on cold, icy, snowy surfaces
Midsole FloatPro™ Foam
Insert Waterproof, breathable membrane
Height Stack Height: 28.5-20.5mm; Drop: 8mm

Style Number: J037412 WOMENS

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Merrell
Merrell
Utilizing technology such as GORE-TEX®, Thinsulate®, and Microban®, the Merrell® product line, started as one lone hiking boot in the 1980s, has grown to include a wide range of footwear for the outdoor enthusiast and even casual walker.

Acting on its desire to encourage and equip people to get outside, Merrell offers a quality product that will suit your footwear needs, from hiking boots to casual sandals to aqua sport sandals.