La Sportiva Women's Stream GTX Waterproof Mid Hiking Boots - The Stream GTX Women's is a mid-cut hiking boot featuring 360 degree breathability from the Gore-Tex® Surround™ Technology and an innovative midsole. Durable abrasion resistant mesh upper Nano Cell 2.0 structure provides maximum breathability Vibram® XS Trek with Impact Brake System™ sole provides traction and grip PU TechLite toe and heel Gore-Tex® Surround™ aeration channels within the footbed and midsole STB control system inegrates Gore-Tex® Surround™ ventilation outlets and provides a comfortable, snug fitting, and stable boot 5mm Ortholite Insole TPU inserts Compression Molded EVA Weight: 12.10oz (344g) Style: 24E-900619