adidas Adizero Ubersonic Tennis Shoes - AW15 SPRINTFRAME construction - Provides stability and speed through geometrical research to create a lightweight and supportive chassis. Polymer-reinforced upper mesh - Provides full foot breathability while stabilising the upper framework. ADITUFF -For best abrasion resistance in the toe area and medial side. Moulded EVA midsole - Offers better cushioning and resilience. Seamless construction - For better fit and comfort.