Merrell Women's Siren 4 Thermo Mid Zip WP Boots

With 25 years of Merrell's women's-specific fit, the Siren 4 Thermo Mid Zip WP Boots are uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability on even the longest hikes. Now equipped with SOLARCORE® insulation and 200 grams of Primaloft® Gold Eco Series synthetic insulation, you never have to worry about warmth. The waterproof full-grain leather upper and waterproof membrane will keep your feet dry, while the all-new medial zipper provides easy on/off. With a Vibram® IceTrek outsole and traction lugs, these boots provide enhanced grip on uneven, slippery, and icy surfaces.

Best for: Winter Hike
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. Vibram traction lugs specifically designed to increase traction and shed debris with each step

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

Materials:
• Waterproof full grain leather and knit upper
• 100% recycled laces and webbing
• 100% recycled fleece lining
• 100% recycled mesh footbed cover
• 5% recycled PU removable footbed

Additional Measurements:
• Stack Height: 28.5-20.5mm
• Drop: 8mm
• Lug: 5mm
• Shaft height (top of midsole to top of boot): 5.91in, 150mm
• Half pair weight: 1lbs-3.04oz, 540g