Nike Zoom Rival SD 2 Track and Field Shoes, Mens. Choose the Nike Zoom Rival SD 2 that is designed for the entry-level athlete. Whether you're doing shot put or discus, this track and field throwing shoe is just for you. Featuring an adjustable midfoot strap and EVA midsole for cushioning, you'll have a secure and comfortable fit. The lightweight design and adjustable strap provide a lockdown wear for various motions. * Synthetic leather upper * Velcro strap for a secure fit * Contoured construction for stable wear * Rubber outsole for just-right traction in wet conditions * Designed for throwing events such as shot put or discus