I have a SEB Standard Rear Bag for F/TR.  I filled my bag - base and ears with Sinclair heavy sand.  On the forum I see many members indicating that they fill the base of their rear bag with heavy sand and the ears with regular sand.  Is there a benefit in doing this?  I probably am missing something obvious.  Do some of you fill the base and ears with heavy sand like I did? Thanks!
				
			 
	








 
 
		 
 
		 
   
 
		
