The heat is on as you blaze down the trail leaving the competition trailing miles behind. Claim victory in the light and speedy PR MD 3 from Brooks®!A lightweight mid-distance track and cross-country spike. Ideal for events ranging from 400m to 1,600m, as well as for hurdle events. Ultrathin mesh upper. Ultralight welded synthetic overlays. Mid-foot capture helps ensure lockdown over the midsole. Asymmetrical fit construction for an optimal fit. Lightly padded tongue and collar for optimal comfort. Soft lining promotes a great next-to-skin feel.Removable foam insole. EVA heel wedge supplies light cushioning. Ultrathin shark skin outsole for reliable grip. Pebax™ Rnew Spike plate delivers rugged traction. Six-spike configuration.Includes six 6mm spikes and wrench.Imported. Measurements: Weight: 5 ozProduct measurements were taken using size 11.5, width D - Medium. Please note that measurements may vary by size.