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.

Features:

• GORE-TEX® waterproof membrane: exceptional breathability and waterproof performance
  
• Breathable mesh and TPU upper
  
• Bellows tongue keeps out debris
  
• 100% recycled laces and webbing
  
• Protective and abrasion-resistant rubber toe cap
  
• 100% recycled breathable mesh lining
  
• 100% recycled mesh footbed cover
  
• CleanSport NXT™ treated for natural odour control 
  
• Removable PU footbed
  
• Rock plate for protection
  
• FloatPro™ Foam midsole for lightweight comfort that lasts
  
• Vibram® TC5 outsole provides exceptional traction for outdoor multi-sport activities, formulated exclusively for Merrell
  
• Vibram® traction lugs specifically designed to increase traction and shed debris with each step