Merrell Siren 4 Thermo Mid Zip Wp Women's

A winter-ready boot with a women's-specific fit that combines function and all-day wear-ability.

Insulation: 200 grams Primaloft® Gold Eco Series synthetic insulation. Solarcore® Aerogel insole provides underfoot superior warmth while being extremely flexible and ultra-thin.

Waterproofing: Waterproof full grain leather upper, complete with a waterproof membrane seals out water and lets moisture escape.

Traction: Vibram® Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces.

Comfort Features:

• Heavy-duty, Waterproof, YKK zipper for easy on and off
• Protective and abrasion resistant rubber toe cap
• Cleansport NXT™ treated for natural odor control
• FloatPro™ Foam midsole for lightweight comfort that lasts