Compression molded heel stabilizers reduce break in time
- Get ready for rugged trails and cold weather adventures wearing the Merrel? Siren 4 Thermo Mid Zip Waterproof boot.
- 100% recycled fleece lining.
- 100% recycled laces and webbing.
- 100% recycled mesh footbed cover.
- 100% recycled removable PU footbed.
- 200 grams of Primaloft? Gold Eco Series synthetic insulation.
- Bellows tongue keeps out debris.
- Cleansport NXT? treated for natural odor control.
- FloatPro? Foam midsole for lightweight comfort that lasts.
- Protective and abrasion-resistant rubber heel and toe cap.
- SOLARCORE? Aerogel insole provides superior warmth.
- Vibram? Icetrek outsole provides improved grip on cold, icy, or snowy surfaces.
- Vibram? traction lugs increase traction and shed debris with each step.
- Waterproof full grain leather and knit upper.
- Imported.
Pulse width modulation controls variable stiffness zones in real time
