Baselayer Compression fit apparel is designed to fit tight to the skin in order to allow the technical aspects of the garment to work effectively.  With Compression fit garments, you get the benefit of muscle support and the increased flow of blood as the garment compresses and acts on the core muscle groups.  This in turn, assists in protecting muscles from damage and aids overall performance in sport and activity as well as providing thermal benefit where appropriate.  Each brand has its own type of Compression technology with their own different benefits.  However, no Compression garment should be so tight as to restrict freedom of movement. Any Baselayer Compression garment is designed to fit all contours of the body and compress core muscle groups.

It's no longer just competition, it's combat. Today's athletes are bigger, stronger and colliding at higher speeds than ever before.
 
As a result, serious athletes are adding an essential piece of equipment to their arsenal: Nike