adidas Men's Adizero Boston Boost 5 m-M Synthetic Redesigned Upper - A complete revamp of the visual image of the shoe results in a new, sleek, low-profile aesthetic. Air Mesh Upper - Provides 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 sections while maintaining stability. adiWEAR Outsole - For maximum durability in high wear areas.