adidas Adizero Boston Boost 5 Running Shoes Redesigned Upper - A complete revamp of the visual image of the footwear, resulting in a new and very sleek, low-profile image. Air Mesh Upper - Gives your feet maximum breathability and helps to reduce overall weight. adiPRENE+ - In the forefoot maintains propulsion and efficiency. Torsion System - For midfoot integrity, ensuring independent movement of the rear and fore foot whilst still maintaining stability. adiWEAR Outsole - For maximum durability in high wear areas as well as for perfect grip and lightweight durability.