Which of these now-common consumer products was first developed as a military innovation during WWII, created specifically to help soldiers operate in the Pacific theater?

During World War II, urgent military needs drove unprecedented product innovation, resulting in technologies we still use today. Many consumer brands pivoted to wartime production, creating specialized products that later influenced civilian markets. This poll tests your knowledge about a famous product innovation from WWII that revolutionized both military operations and later became commonplace in civilian life. Do you know which familiar consumer product originated from wartime necessity?

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Aerosol bug spray (developed to combat malaria-carrying mosquitoes threatening Allied troops)
Microwave ovens (developed from radar technology to quickly heat rations at military bases)
Aviator sunglasses (designed specifically to reduce glare for fighter pilots in high-altitude combat)
Cargo pants (created for paratroopers who needed multiple pockets to carry equipment during jumps)