I'm impressed with the Megababe anti-friction stick so far. I haven't had to use it in extreme situations, but in 80° temps, it's worked well. It goes on like a deodorant stick, but feels like a powder when you're walking, nice and smooth. Just like it advertises: no friction. I'll be testing it out in 100° weather soon to find out just how many hours it can last before needing to be reapplied.