Published by at 03/08/2026 The Under Armour Women's ColdGear Authentics Mock Neck Baselayer is a high-quality shirt made with a dual-layer fabric, perfect for cold weather activities. With a long sleeve and a mock neck design, this black shirt offers both style and functionality. Ideal for women in size M, this baselayer from the ColdGear product line by Under Armour is a must-have for anyone looking for comfortable and warm activewear. Perfect for outdoor workouts or stay warm during indoor training sessions.