Built in arch support

Max Air unit provides responsive cushioning

With sleek branding and a new-look upper

Flex grooves in the rubber let it bend with your foot while you run

Upper Material: Leather

NIKE AIR MAX ALPHA TRAINER 4 - BLACK/CHILE RED-WHITE docs Built in arch supportTackle your most intense workouts in the Nike Air Max Alpha Trainer 4. The wide, flat base with Nike Air cushioning gives you comfortable stability for lifting. The heel is redesigned with supportive padding that helps take a load off during your heaviest sets. Everything comes together in a durable shoe built for the rigours of the gym. Reinforced to Support The heel wrap meets the laces at the midfoot, for support during explosive moves. Durable