Ebay offers Under Armour Men's 1/2 Zip Tech Muscle Pullover for $27.76 (reg $50) with free shipping.

Product Description:
From cardio workouts to everyday wear, the Under Armour Men's 1/2 Zip Pullover is designed to meet the needs of your active lifestyle.

• Suggest sizing up for optimal fit
• Lightweight UA Tech material offers softer, more natural feel
• Moisture-wicking technology pulls sweat away from the body to keep you dry
• 1/2 Zip Closure
• 100% Polyester