I like these a lot more than foam grips. They are made of very tacky rubber, but the feel inspires confidence. Installing them is a tricky deal -- I used a rubber-cement-like glue from Loctite called Stik'n'Seal. It acts as a lubricant until it starts to set, which happens in about a minute. You gotta use lots of glue, and make sure you get it all the way down the inside of the grip. Then push, twist and "slinky" the grip onto the bar. Don't stop until it's ALL the way on, or you'll have to tug it off, or even cut it off. Once it's on, it's a great grip.