I guess it depends on the sport. This is track and field so are the folks really going to run in full track suits if it is 35 degrees? Cannot have kids out there in tank tops at that temp. Sort of takes away from the event when you have to change your uniform to play. Football, baseball, the uniforms do not change just add some extremity coverage. Imagine doing the high jump in full winter gear. LOL. LL Bean offical hurdles outfit. LOL