I bought 2 pairs of these and cannot return. the y retail for $36. one package was opened and tried on. One not even opened. Cannot be returned. I am only selling as lot of 2. The only sweat proof t-shirt that looks and feels like a regular tee! Guaranteed to eliminate 100% of underarm sweat stains, deodorant stains and reduce odor. Equally excellent as an undershirt. (from their website)