Ebay offers Adidas Men's Aeroready Designed to Move Feelready T-Shirt for $8 (reg $25) with free shipping.

Product Description:
From morning workout routines to afternoon track runs, this adidas t-shirt keeps you moving in comfort. Moisture-managing AEROREADY ensures you stay dry when you're on the go. The FreeLift design gives you full a range of motion and a stay-put fit during overhead movements. A longer back hem adds extra coverage.