We bought this to keep debris from overhead trees off the trampoline. It doesn't fit our trampoline exactly how it is supposed to (we have a different brand) but it fits well enough to work and does a good job keeping the mat clean. Zipper on this isn't great - the zipper foot came off easily and we couldn't get it back on within just a few days of using it. It doesn't let rain/water thru, so when it rains it creates a big puddle in the middle we then have to dump out with a broomstick. Wish there were more options out there for trampoline toppers/covers, but there aren't so this is what we have to work with.