La Sportiva Synthesis Primer Low GTX Womens 7 Trail Hiking Running Shoe Gore Tex. Excellent pre-owned condition - see pics for details Size: 7 M (standard width) Key Features Waterproofing: It features a GORE-TEX SURROUND lining, which provides 360° breathability while remaining fully waterproof. Upper Construction: Built with breathable Air-Mesh and Nano-Cells technology, which wraps the upper to provide structure without sacrificing airflow. Sole Technology: Equipped with a Vibram Nano sole and an Impact Brake System for enhanced traction and stability on varied terrain. Midsole: Uses compressed EVA with TPU inserts for cushioning and support. Specifications Intended Use: Fast hiking, Nordic walking, and trail running. Footbed: Ortholite Mountain Hiking.