I must admit I was very sceptical about this tape. I suffer from patella misalignment which makes running very painfull and traditional supports only make it worse.
I have been training for a sprint triathlon and found that once the tape was applied my knee remained pain free. It sticks like glue despite daily swims in the local pool but I tend to take it off after about 7 days as it starts to look a bit tatty.
There are clear video instructions on how to apply the tape on the KT website.
I can't praise KT Tape Pro enough, great product and I'm definately buying more!