Review on Mirone Adjustable Southwest Airlines Airplane Seat Belt Extender (7-32 Inch) - E-9 Safety Certified (Type B) by Jeff Johnson

On a flight to Las Vegas from Milwaukee, Wisconsin, the belt worked perfectly. On the return flight home from Las Vegas Nevada the same SouthWest airline must have had a newer plane and the belt didn't work so I had to ask the flight attendant for one and she said even though the belts say they fit everyone are . They don't have SW planes. I was confused and now I know it will be hit or miss with SW Airlines.