Adidas Vigor TR 3 - Grade School - The adidas Vigor 3 TR trail running shoe features an all-over mesh upper that provides comfort and breathability. Strategic underlay placement adds support. adiPRENE® insert in heel delivers comfort and shock absorption. Non-marking rubber outsole. adiWEAR® gives best durability in high-wear areas. TRAXION™ offers maximum grip in all directions.