The Nike Zoom Mamba 2 track spike is designed for elite level 800-5000 meter track athletes. Lightweight mesh upper adds ventilation, comfort and breathability. Arch bandage locks down the foot to offer a snug, supportive fit. Ultra-thin, lightweight Phylon™ midsole gives superior impact protection with little added weight. Removable five-spike Pebax® three-fingered plate provides aggressive traction. Includes 7mm Christmas tree spikes and a wrench.