With 25 years of Merrell's women's-specific fit, the Siren 4 Thermo is uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability even on the longest hikes with added insulation for warmth and protection.
FEATURES
Waterproof membrane seals out water and lets moisture escape
Protective shell keeps feet dry
Waterproof suede leather upper
100% recycled laces and webbing
Bellows tongue keeps out debris
100% recycled fleece lining
100 grams Primaloft Gold Eco Series synthetic insulation
Rock plate for protection
FloatPro Foam midsole for lightweight comfort that lasts
Vibram Icetrek outsole designed to provide the improved grip on very cold, icy, or snowy surfaces
Drop: 8mm
Lug: 5mm
