Which of these popular consumer products was originally developed specifically for military use before becoming a retail success?

Many military technologies and products have transitioned into everyday consumer goods, creating some of the most successful retail product developments in history. These crossover products have often revolutionized civilian markets while maintaining their military heritage in branding and design. Test your knowledge about how military innovations have shaped the retail landscape and consumer behavior patterns.

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Jeep vehicles - originally designed as the General Purpose (GP) vehicle for the U.S. Army in WWII before becoming a civilian brand in 1945
Gillette razors - created by King C. Gillette specifically for Navy sailors who needed to maintain clean-shaven appearances while conserving water
Tupperware containers - designed initially for storing ammunition and sensitive equipment in humid Pacific theater conditions during WWII
Ray-Ban sunglasses - developed for the U.S. Marine Corps to protect eyes during desert operations before civilian marketing began