adidas Adizero Adios Boost 2 Women's Running Shoes Energy Boost Midsole - Every step becomes charged as the Boost midsole absorbs some of the energy from your footstrike and charges it into forward momentum Extended TORSION System - Midfoot shank which adds strength and integrity to the trainers. Coolever Mesh - Lightweight mesh and lining in a clover shaped yarn helps to manage and eilminate heat and sweat build-up. Continental Rubber Outsole - For superb grip, more durable and longer lasting mileage. Quickstrike Outsole - Decreased weight and increases flexibility and durability; Forefoot blown rubber combines light weight with grip