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.
For sneakers, you may cancel your order within 3 hours of placing it or before it is confirmed by the seller - whichever comes first. If 3 hours have passed from when you placed the order and/or the seller has already confirmed the order, then the order cannot be canceled. If neither have occurred, you can cancel your order first by accessing it via “Track My Order” or “My Account,” clicking “Cancel Order” and following the instructions.
If you checked out as a guest, you will need to create a Flight Club account.
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 2-5 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.