My WN has a string at the end of the velcro that you use to tie the foot-box closed (close to where your knees go, not the string at the end channel). I had the same question as you after trying to figure out which one was which. As soon as I got home I wrote "WN" and "Nest" with a sharpie on my tags.
I ride a recumbent.
I like to HAM it up on the CW.
I use Linux.
I play go.
Of course I sleep in a hammock!