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GCSE NEA: Wrist Cooler - Coggle Diagram

- - - - Pros
        
        Works well when cooled
        
        Reliable
        
        Energy saving
      - Cons
        
        Leak risk
        
        High cost for money
    - - Pros
        
        Cooling on demand
        
        Portable
      - Cons
        
        Can damage skin
        
        Freezer dependent