I purchased these slippers for my husband for Christmas after reading the reviews.  He LOVES them.  He said they are comfortable, stay on his feet great, and he loves the felt fabric on the bottom, as it makes the slippers non-slip.  They are great for indoors and out.  They even look good with jeans if you're just running out real quick and don't feel like putting on regular shoes.

***UPDATE***
4 months later and the slippers are still going strong, look brand new, and my hubs still loves them!  He wears them outside quite a bit, and I often have to remind him to put shoes on before we head out.  Sometimes he just wears his Deer Stags out of the house despite my reminder.  Great slippers!  Highly recommended.