Hey guys. I'm WAY behind on my BPL postings these days, so my apologies.
Pads: Less durable than others, however I wouldn't consider them "fragile"...in return for caring for it, you get the ultra low weight. That said, I have used mine for many, many trips and they hold well. It is the lightest pad per volume out there, if I could get them lighter, believe me, I would! :)
I'm still using my 1/2" PF Sheet (sold out for some time now) from a couple of years ago. Looks beat up but I have no plan to replace it as of yet.