Siren 4 Thermo Mid Zip Waterproof Hiking Boot - Women's

Built for cold-weather trail days and winter approaches, the Siren 4 Thermo Mid Zip WP is our pick for women who need real warmth without bulk. Solarcore Aerogel insole technology blocks cold from the ground up, while 200g synthetic insulation keeps feet warm on the move. The Vibram Icetrek outsole handles ice and packed snow where standard lug patterns give out.

• Vibram Icetrek outsole bites into ice and slick winter terrain where standard rubber loses traction
• Waterproof full grain leather and mesh upper keeps feet dry; side zip makes on-and-off fast with layers
• Solarcore Aerogel insole pairs with 200g synthetic insulation for warmth from the ground up without dead weight
• Mid-height collar adds ankle support on uneven winter ground; women's-specific last fits the natural shape of the foot
• 8mm heel-to-toe drop and 28.5mm stack height keep you stable and connected on varied terrain — not floating above it