The Women's Siren Sport GTX Shoe is an athletic shoe from Merrell that will stretch your limits on real ground under open skies. The Gore-Tex lining makes this shoe completely waterproof while still being highly breathable. It is ideal for off-road running, speed hiking or trail biking and will fit into a casual sports outfit well. It is extremely lightweight and cut low around the ankle for excellent freedom of movement and the Vibram outsole is durable and grippy on a huge range of surfaces.