From UNDFTD's Louisville Vintage collection, this Champion Cavs warm-up, complete with bottoms. All for a very reasonable $275.
Here's the official description:
Champion brand 2 piece warm up suit. Top features hidden button snap placket, die cut tackle twill logo applique, NBA logo embroidery, side seam pockets and lined with poly mesh. Pant features break away side seam snaps, Champion logo embroidery, drawstring waistband and lined with jersey.