Designed specifically for women, the Siren 4 Traveler is uniquely engineered to cradle the distinct contours of a women's feet, providing comfort, support and stability even on the longest hikes. Equipped with a FloatPro Foam™ midsole for lightweight cushion and a Vibram TC5+ outsole for all-around balance of grip, traction, durability, and flexibility. The Siren 4 Traveler is also designed with eco-friendly materials throughout. Go out and take on the trail with confidence.