Wearing Tzitzit Without a Shirt Underneath

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Question:

 

 

 

What is the Halacha regarding wearing Tzitzis straight on the skin of the body and why you we wear it on top of a shirt and where can the Halacha be found?

 

 

  

  

Answer:

 

Some Poskim are lenient and others are stringent and consider it a disgrace. If being worn as an undershirt specifically to  protect from sweat, it is more problematic, as some Poskim say it then does not even require Tzitzis. 

 

See Shu"t Rivevos Efraim Vol. 4 Siman 15 and Shu"t Teshuvos V'hanhagos Vol. 1 Siman 25