Synthetic leather and strap help provide support for launch. The Nike Zoom Rival SD 2 delivers a flexible fit that's ready for your next competition. Its synthetic leather offers contoured support while the integrated strap secures your midfoot, enhancing your precision for launch. Seamless Support - Synthetic leather offers seamless support. Secure Fit - Integrated strap wraps the midfoot for a secure fit. Breathable Mesh - Mesh by the toe and sides enhances breathability. Flexible, Textured Outsole - Flexible, textured outsole is designed for fast throwing circles and wet conditions. Product Details - Forefoot plate and rubber toe tip for durability. Foam midsole.