Merrell Siren 4 Thermo Mid Zip WP Women's Winter Boots - Hazel (EU 38)

Stay warm and confident in the harshest winter conditions with the Merrell Siren 4 Thermo Mid Zip WP. Designed for women who demand performance and comfort, these winter boots combine advanced insulation, waterproof protection, and superior traction. Whether you're navigating icy sidewalks or exploring snowy trails, the Siren 4 delivers reliable warmth and stability.

Advantages

Featuring Primaloft Gold Eco Series 200g insulation, these boots provide exceptional warmth without bulk, rated to -25°F / -32°C. The waterproof full-grain leather and textile upper, combined with a waterproof membrane, keep your feet dry in slush and snow. The Vibram Arctic Grip All Terrain outsole ensures outstanding grip on ice and packed snow, while the lightweight EVA midsole with Merrell Air Cushion offers all-day comfort. Sustainable materials include 100% recycled laces, webbing, and fleece lining, plus 50% recycled EVA footbed and 10% recycled rubber outsole.

Suitable for

• Winter hiking and snowshoeing
• Daily commutes in cold, wet climates
• Outdoor activities in sub-zero temperatures
• Women seeking eco-friendly, high-performance winter footwear

Key specifications

• Product Type: Winter Boots
• Gender: Women's
• Waterproofing: Waterproof membrane
• Insulation: Primaloft Gold Eco Series, 200g
• Temperature Rating: -25°F / -32°C
• Outsole: Vibram Arctic Grip All Terrain
• Midsole: Lightweight EVA with Merrell Air Cushion
• Upper: Waterproof full-grain leather and textile
• Lining: Fleece (100% recycled)
• Footbed: Removable Kinetic Fit BASE with fleece lining (50% recycled EVA)
• Closure: Lace-up with medial zipper
• Lug Depth: 5mm
• Color: Hazel
• Size (EU): 38

Recommendations

For best performance, pair with moisture-wicking socks and treat the leather upper with a waterproofing conditioner. The medial zipper allows easy on/off, while the lace-up closure ensures a secure fit. Ideal for women who need reliable winter boots that combine warmth, traction, and sustainability.