Technical line drawings of a football helmet patent fill a dark charcoal ground, rendered in white ink with the precision of an engineering schematic. Multiple views show the helmet from different angles alongside detailed cross-sections and component diagrams, creating a layered composition that reads as both scientific document and sports history. Printed to order on a soft, absorbent mat with a no-slip backing, ready underfoot the moment you step out. The kind of art you don't expect on a bathroom floor.