The Nike Zoom Superfly G5 is a technical track spike for the "power" 100-400 meter sprinter looking for complete lockdown in a lightweight package. Simple, synthetic, two-panel body construction creates a snug fitting upper, forefoot strap and frame system offers complete lockdown for maximum power transfer, lace shroud improves aerodynamics and protects the laces from coming undone. Thin Phylon™ midsole wedge. Aggressive and rigid platform sprint plate with eight receptacles for power, lightweight Phylon™ heel pad and minimalistic forefoot pad. Wt. 7.4 oz.