Upper: full-grain leather and wool with protective rubber toe and heel caps for durability
Moisture-wicking waterproof membrane to help your feet stay cool
Bellows tongue helping keep debris out and recycled mesh lining
Medial zipper for easy on and off and laces partially made from recycled materials for custom fit
Fleece lining for added warmth
Midsole: lightweight FloatPro® Foam for lasting comfort
200 g PrimaLoft® Gold Eco Series insulation and SOLARCORE® insulation with Aerogel provides underfoot superior warmth while being extremely flexible and ultra-thin
Outsole: Vibram® IceTrek® rubber for superior traction during winter conditions
Upper: full-grain leather and wool with protective rubber toe and heel caps for durability
Moisture-wicking waterproof membrane to help your feet stay cool
Bellows tongue helping keep debris out and recycled mesh lining
Medial zipper for easy on and off and laces partially made from recycled materials for custom fit
Fleece lining for added warmth
Midsole: lightweight FloatPro® Foam for lasting comfort
200 g PrimaLoft® Gold Eco Series insulation and SOLARCORE® insulation with Aerogel provides underfoot superior warmth while being extremely flexible and ultra-thin
Outsole: Vibram® IceTrek® rubber for superior traction during winter conditions
Upper: full-grain leather and wool with protective rubber toe and heel caps for durability
Moisture-wicking waterproof membrane to help your feet stay cool
Bellows tongue helping keep debris out and recycled mesh lining
Medial zipper for easy on and off and laces partially made from recycled materials for custom fit
Fleece lining for added warmth
Midsole: lightweight FloatPro® Foam for lasting comfort
200 g PrimaLoft® Gold Eco Series insulation and SOLARCORE® insulation with Aerogel provides underfoot superior warmth while being extremely flexible and ultra-thin
Outsole: Vibram® IceTrek® rubber for superior traction during winter conditions
Upper: full-grain leather and wool with protective rubber toe and heel caps for durability
Moisture-wicking waterproof membrane to help your feet stay cool
Bellows tongue helping keep debris out and recycled mesh lining
Medial zipper for easy on and off and laces partially made from recycled materials for custom fit
Fleece lining for added warmth
Midsole: lightweight FloatPro® Foam for lasting comfort
200 g PrimaLoft® Gold Eco Series insulation and SOLARCORE® insulation with Aerogel provides underfoot superior warmth while being extremely flexible and ultra-thin
Outsole: Vibram® IceTrek® rubber for superior traction during winter conditions
Upper: full-grain leather and wool with protective rubber toe and heel caps for durability
Moisture-wicking waterproof membrane to help your feet stay cool
Bellows tongue helping keep debris out and recycled mesh lining
Medial zipper for easy on and off and laces partially made from recycled materials for custom fit
Fleece lining for added warmth
Midsole: lightweight FloatPro® Foam for lasting comfort
200 g PrimaLoft® Gold Eco Series insulation and SOLARCORE® insulation with Aerogel provides underfoot superior warmth while being extremely flexible and ultra-thin
Outsole: Vibram® IceTrek® rubber for superior traction during winter conditions
The Merrell Siren 4 Thermo Mid Zip WP women's winter boots are uniquely engineered for female feet, providing comfort, support, and stability even on the longest hikes. With 200 g of insulation for warmth and protection and now equipped with added SOLARCORE® insulation, a lightweight insulation material initially designed for NASA, you never have to worry about your feet getting cold. The all-new medial zipper provides easy on and off while the Merrell waterproofing on the upper will keep your feet dry. With Vibram® IceTrek® outsole, traction remains consistent under the wettest, most slippery conditions thanks to the Vibram® traction lugs for enhanced grip on uneven terrain.
