It is! i was nursing a slow puncture, I was on a touring bike and they have no grip in the rain, believe me, i had the back out a couple of times. And about 2 mins was spent at the other end "doing the deed" and checking the bike. I doubt i exceeded 2 mph even going down the long hill, normally i do 40+ down it. Next time its bright and sunny and the punctures are fixed, ill do a speed run and see what time i get, then we can judge.