Unique Compression jersey and outer vest construction. Stretch Compression jersey improves fitness, lessens fatigue and controls core body temperature. Outer "vest" is constructed from a vented Waffle Weave material. Fully sublimated graphics will not fade or peel. Endless collar and cuff design Silicone printed tail with finished waist seam. All construction seams are flat stitched to reduce irritation on the skin. Unique Performance fitting. TPR neck detail with transferredSize and wash instructions. Machine washable, will not shrink.