adidas Supernova Glide 6 Boost Women's Running Shoes Boost Midsole - Has an amazingly bouncy feel without being too soft, and that makes for a light, fast run. TORSION SYSTEM - For midfoot integrity throughout the footstrike. Continental Rubber Outsole - For superb grip, more durable and longer lasting mileage. Seamless Upper - This lightweight and breathable material provides supportive, skin-like fit. Redesigned Upper - This newly designed upper allows for increased movement and added ventilation, keeping your feet cool and dry.