Stretch French Terry is naturally breathable and has built-in stretch to move with you. Keep your keys from bouncing - store them in the hidden stash pocket. Cozy, double collar lets you snuggle in and hold on to heat. Hidden thumbholes help keep your sleeves down and your hands warm. Wear this layer open for easy layering, or do up a button or two to lock in post-practice warmth. Designed not to shrink so there are no surprises on laundry day