Ebay offers Adidas Men's Train Essentials Feelready Training Tee for $5.76 (reg $25) after code with free shipping.

Apply Code: ADIDAS40 and LONGWKND20

Product Description:
From push press to push-ups, move through a full range of motion in this adidas training t-shirt. It's cut to allow your arms to move freely overhead. Breathable fabric and moisture-absorbing AEROREADY keep you dry and comfortable as your heart rate rises.