New Balance MSD100L5 09.jpg 00.jpg NEW4XB2850_02.jpg. New Balance MSD100L5 Mens Sizing. For womens sizing add 1. 5 sizes eg 7 mens equals 8. 5 womens The New Balance SD100v5 is everything an entry level spike needs to be and more. This nimble track spike excels at distances between 60m to 400m. TECHNOLOGY Synthetic Overlays FantomFit Technology Internal Shank TPU Outsole 6 Spike Plate 6mm Spikes FEATURES UPPER Fantom Fit is a skeletally engineered upper that provides ultralight support and fit. Created by fusing two thin materials with a no sew process. OUTSOLE 6 spike Pebax plate offers a high strength thermoplastic polymer outsole with enhanced flexibility and durability. MIDSOLE An innovative foam compound providing the same responsiveness and durability of New Balance foams 30% heavier. REVlite offers a lightweight ride without minimizing construction or sacrificing underfoot cushioning or stability.