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Designed for colder conditions, the Merrell® Siren 4 Thermo Lace Waterproof delivers warmth, waterproof protection, and a specific fit. Featuring Primaloft® insulation, faux fur lining, and Vibram® Icetrek traction, it's built to handle snowy sidewalks and chilly trail days. Lightweight FloatPro™ foam adds lasting comfort without the bulk of traditional winter boots.
Designed for colder conditions, the Merrell® Siren 4 Thermo Lace Waterproof delivers warmth, waterproof protection, and a specific fit. Featuring Primaloft® insulation, faux fur lining, and Vibram® Icetrek traction, it's built to handle snowy sidewalks and chilly trail days. Lightweight FloatPro™ foam adds lasting comfort without the bulk of traditional winter boots.