Do not let the affordable price fool you, these are quality reading glasses and they show off your love for the Minnesota Vikings! The classic black frames are made from a strong, yet flexible polycarbonate and they feature flex hinges for a comfortable fit. The arms feature an expertly printed team logo. Strenght 2.00 Officially licensed NFL product Strong, but flexible polycarbonate frames Flex hinges for comfort and durability Classic black frames that never go out of fashion Expertly printed Minnesota Vikings logo on each arm