Engineered mesh provides ventilation for your forefoot while supporting your midfoot. The partial mesh inner sleeve enhances breathability while offering and a sock-like fit. OFF White x Nike Flyknit Racer AA526628 100 White Black Orange Shoe For Sale. Plush foam and mesh tongue for breathable comfort and Midsole flex grooves provide greater forefoot flexibility OFF WHITE x Nike Waffle outsole for durability and great multi-surface traction.