Vintage Athletic T-Shirt Design

4. 1080x1080 square graphic t-shirt design with a #D3D3D3 background, text-based layout only, oversized vintage athletic typography reading “HR... HEATING RUB,” simple centered composition, readable from 10 feet away, one clear baseball-aging joke, solid muted colors only, using deep burgundy and faded cream ink, vector format, bold high-contrast lettering, clean negative space, no gradients, no detailed illustration, no small decorative elements, entire graphic contained within the frame.