Anatomical Fit: Left and right-specific design ensures a perfect fit for each foot

sockliner lining and shoelace

Anatomical fit for unparalleled comfort

providing comfortable breathability and a secure

Merrell Siren 4 GTX Womens Full Price Anatomical Fit: Left and right-specificSpecs: 25 years of Merrell's women's specific fit. The Siren 4 is uniquely engineered to cradle the distinct contours of female feet, providing comfort, support, and stability even on the longest hikes. GORE TEX waterproof membrane, exceptional breathability and waterproof performance Breathable mesh and TPU upper 100% recycled laces and webbing Bellows tongue keeps out debris Protective and abrasion resistant rubber toe cap 100% recycled breathable