Which geographic-specific innovation was introduced to product design in response to the challenges of the Himalayan region?

Product design varies significantly across different geographic regions, adapting to local environments, cultural preferences, and practical needs. This trivia question explores how a specific product has been redesigned to meet the unique challenges of a particular geographic context. Test your knowledge about how geography influences product innovation and adaptation!

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Solar-powered water filters that function efficiently at high altitudes with intense UV exposure
Desert-specific smartphone cases with enhanced heat dissipation and sand protection
Arctic-region food packaging that changes color when contents freeze and thaw repeatedly
Coastal region backpacks with built-in humidity sensors and automated ventilation systems