A really good Ab Roller for the price, very easy to assemble, strong, comfortable handles, wheel tread is rubber so it gets a good grip, and has a smooth roll action, the handles are also very easy to clean, plus you get a leaflet explaining correct way to use the roller, and advice on sets and reps for the beginner to the advanced user; All in all a well made roller worth the money. There are however much better Ab rollers on the market, but not at this price and this one would serve anyone's core training needs, so my advice "don't waste your money".
I'm lazy and I don't use it as often as I should, but this little wheel thingy.. is m-a-g-i-c-a-l. I mean my lazy abs feel the effect in no time : D ev'ry time. So don't abuse it, treat it with respek'.. take it easy, push bit by bit, don't injure yourself. Overdo it.. and you might find yourself not being able to get out of bed the next day.. :P