Through 6/23, this boys' Under Armour Long-Sleeve T-Shirt 3pk drops from $89.97 to $49.99 to $31 when you apply our coupon code BD31 at checkout at Proozy. Plus shipping is free. This beats our mention from last month by $5 and works out to $10.33 per shirt. This mystery pack includes three T-shirts in the size of your choice from S-L. Colors will be chosen at random from the following possible styles: ColdGear Infrared Everyday Printed Shirt, ColdGear Fitted Crew, and UA ColdGear Infrared Loose-Fit Shirt. There is no sales tax (except MN).