Unisex Nike Zoom Rival M 9 Designed to be the most versatile track spike for a wide range of events, the Nike Zoom Rival M 9 delivers a cushioned, consistent fit. The arch band offers a secure feel through the midfoot, while the overlay on the upper adds durability in high-wear areas. The Nike Zoom Rival M 9 in Bright Mango and Blackened Blue is designed for a variety of events, with a versatile build and soft, reliable fit whatever you are doing.