These are very comfortable.  I was concerned the button would be a problem but this style is actually easier to use than standard boxer style.  Very soft and silky...can't really tell you are wearing them; standard cotton boxers tend to ride up when putting on pants...didn't have that problem with these.  Don't know about durability since I have only washed them once right out the pkg but I didn't see any wear or tear from the 1st wash; some people have said they fall apart quickly.