I never personally got one, but the shirts some of our sisters wore were dark blue (navy blue?) long sleeved shirts with Alpha Delta Pi Athletics in a sort of circle around a lion sitting in the middle of the circle of words. It sounds really confusing to describe it, but I was always so sad I never had one of my own
I know our girls also wore our "smurf-blue" shirts that said Come Be A Part of Our Pride (or something like that) with a huge lion face in the middle for athletics, and those of us who didn't have either of those shirts usually wore block-letter shirts