I love that these are so lightweight and protect my feet from cold floors in winter or summer.  This is my second pair - I was giving them one more chance because I love how thin they are.  I guess that is their downfall too because this pair got a hole in less than a month.  The pair before also got holes, but it took a little longer.  So frustrating as they are now useless.  Luckily the amazing customer service at amazon took them back because I felt they were defective.  Will not buy again.