The UltraBoost 4.0 ‘Grey Four’ features ribbed Primeknit construction throughout the upper. The breathable material is constructed primarily from black and grey yarns, along with pops of teal for a subtle mélange effect. A matte grey midfoot cage is complemented by a white molded heel counter, while a matching white Boost midsole rides on a black rubber outsole for durable traction.
Delivery and processing speeds vary by pricing options. "Lowest Price" orders ship to Flight Club first for verification and typically take 7-9 days (M-F) to reach you. "Fastest To You" orders will be shipped out the same day if ordered by 2PM ET (M-F, excluding holidays) and typically take 1-4 days (M-F) to reach you.
Estimated delivery times do not apply to international orders. International customers are responsible for any additional fees or taxes after an item ships.