Base Layer - Made from the same materiel used by Under Armour, this base layer is designed to wick moisture away from the body core along with keeping body heat in. This monthly preorder special combines the mock turtle neck top with the matching bottom to complete the base layer at a reduced price. Preorder through 11-31-2009. All preorders scheduled to ship by 12-15-2009. Please note when ordering that sizes run approx 1 size smaller than most clothing. ie... if you normally wear a Large, you will need an Extra Large.