A Siren that sounds the alarm when the weather comes up bad, and keeps pace with the worst it can throw out. Mesh upper backed by GORE-TEX® XCR® membrane has the highest level of breathability while being completely waterproof without any unwanted bulk-up. Narrow gauge webbing and synthetic leather strapping provide support while anchoring speed lacing. Underneath it’s all about cushioning and alignment, with proprietary Merrell Air Cushion matched to Q-Form® stride-centering.

Upper/Lining
• Strobel construction offers flexibility and comfort
• Synthetic leather and mesh upper
• Bellows tongue keeps debris out
• GORE-TEX® Extended Comfort Footwear lining keeps
feet dry and comfortable
• Lining treated with Aegis® Antimicrobial solution
maintains foot comfort
• Ortholite® Anatomical Footbed
Midsole/Outsole
• Molded nylon arch shank
• Q-Form® Comfort midsole provides women’s specific
stride-sequenced cushioning
• Merrell Air Cushion in the heel absorbs shock and
adds stability
• 5 mm Sole lug depth
• Vibram® Siren Song Sole/TC5+ Rubber