RainViva 147cm(58") Automatic Windproof Golf Umbrella with Reflective Edging Imported Durable Pongee canopy with Dupont Teflon coating for water resistance Built in reflective edging coating cover for safety 126cm (50") diameter when open (58" arch measurement) Lightning resisting, lightweight, super-strength carbon fiber shaft 8 double fiberglass ribs to give extra resistance against winds