Which of these popular consumer products was genuinely developed as a direct result of NASA space technology research?

The crossover between space exploration and consumer products has led to remarkable innovations in retail. NASA's technology transfer program has contributed to numerous everyday items we now take for granted. This trivia challenges your knowledge of how space science has shaped product development and consumer feedback in unexpected ways. Can you identify which famous retail product truly originated from NASA's space research?

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Memory foam mattresses, originally developed in the 1970s to improve crash protection and comfort in aircraft seats
Teflon non-stick coating, invented for the Apollo heat shields before being applied to cookware
Microwave ovens, developed after a NASA engineer noticed a chocolate bar melting near radar equipment
Velcro fasteners, created specifically for astronauts to secure items in zero gravity environments