What is this close-up picture? (WotsThat: Third base bag texture (macro))

Question

What object is shown in this zoomed-in close-up photo?

ZapZero · Accepted Answer

Third base bag texture (macro). A baseball base is officially called a bag because early bases were literally canvas sacks stuffed with sand or sawdust, and the padded canvas design has barely changed in over a century.

Answer: Third base bag texture (macro)

More man made close-ups