Product Description : Sunny Indoor Cycling Bike This is a great indoor cycle. I bought it in the hopes of committing to my new year resolution.ASSEMBLY: I was able to put this bike together within 15 minutes. The main body of the bike comes assembled already (wheel, tension assembly, etc). All you have to do is attach the seat, two bars at the front and rear, the handle bars and the pedals. A helpful tip: if after assembling the bike, it is unstable, you have either tightened one bolt too much or others too little.EASE OF USE: It's just like riding a bike! The pedals straps help keep you on the bike for those intense workouts. The tension adjustment seems to provide a great range for a relaxed or vigorous workout.COMFORT: Ok, the seat is AWFUL. It's literally a pain in the butt. If that's the only drawback for the price, I can live with it. There are two solutions to this problem: purchase a new bike seat (they designed it using the standard bike seat guidelines) or purchase a bike seat cover. At the most, you'll add on $25 to the purchase price.It's a great bike for the price. Like I said, just plan on purchasing something for the seat. It's an okay bike, considering it's so inexpensive. The tension works well and the wheel creates a wonderful fan-like breeze that is nice. But it's difficult to adjust, although if it's just one person using it, you won't adjust the seat height and handlebar height all that often. It's not the best on the market but for what you'll pay for it, it's not that bad. Warning: The left pedal has a reverse thread, so try turning it the other way to tighten it. This item 1) will not accommodate anyone but short people AND 2) arrived damaged. Construction is poor to average. I am 5'10" and it's like riding a tricycle. I do not recommend.