Garry Fong collapsible Generation Five Speedmount Lightsphere...purchased for a portrait project, but never used. Quality, durable material; scientific design for even light dispersal. Velceo* strap secures diffuser to various flash heads...maximum size of diffuser opening is 3" X 1 3/4". Sells for $60.00 new, my price is $35.00US, plus $3.25 USPS.