I just take tenacious tape and a fast & light neoair repair kit for my sleeping pad.
But honestly... I have found this thing to be nice and durable. No issues here... and I would not consider one, unless I was hard on my gear. Which I usually try to be very considerate to it. Then again, when I wake up I put all my sleep system into a 50 liter drybag (2.6 oz) and then squeeze all the air out of it and put it away. This helps cut down on any chance that my gear (sleep system) is open to the elements at any point.
Hope that helps... that is my strategy.