This is a free product I received as a participant of WalMarts' Spark Review process established to help prospective buyers shop confidently, be informed and to aid in a positive shopping experience. I have posted a simple YouTube video review for those more visual shoppers which is linked for your convenience below. I am so impressed with my new 20” Hyper Shocker Mountain Bike which is not just for boys! I am a shorter middle aged active woman and have found this bike to be just perfect for me. With its easily adjustable seat and handlebar, I was able to quickly adjust this bike to my preferred comfort upon finishing the simple assembly. Assembly, well this came mostly pre-assembled, leaving me to put the front tire on, handlebar, seat and foot pegs. Utilizing a pair of channel locks, I was able to have this bike put together in about 30 minutes from box to set up. I actually did not require the directions however being a handy person, this is normal for me. Tweaking the brake adjustments was something I did not spend much time on. I feel depending on what kind of rider or how intense of riding you will do, will help determine how aggressive you wish to go with those details. Shimano equipped, I had to look that up since I was unfamiliar with the term. A quick explanation is; Shimano is known for its exceptional systems engineering which equals all parts working systemically well and in sync with each other. Bike enthusiast will know this however for those of us who are not hardcore, I hope that explanation helps. In short, this bike is not necessarily a beginners bike but due to its superior design, materials used and overall capabilities; I feel a picky BMX rider would definitely enjoy this bike. Styling, I love the hyper graphics and overall appearance. The fork framing is designed quite unisex without taking away from the strength of the bike frame.There are a handful of features which you can read on the product description itself which also includes this is a 7 speed hand twist gear shifting bike. My favorite feature of this bike is the suspension. Featuring front and mid body suspension; this bike has incredible shock absorption for trick riding or any rough terrain adventure. The suspension is tight, responsive and not to easily compressed. In short, impressive. As for comfort, it felt great sitting and riding upon. The seat was not bothersome to me, the position I sat to ride was not hard on my body and the handle grips were comfortable in my hands. The front and rear braking is responsive and gear shifting will improve with my getting use to riding this bike. Weighing in at about 31 pounds, its a great performing bike for the money. This product is not heavy or too bulky. I do not recommend a 2 person lift for convenience due to its mild bulky nature. This is a 1 person build taking about 30 minutes of your time and a pair of channel locks. The instructions were easy to follow and accurate ( I read them after assembling). It is a beginner level project to enjoy. Although mostly pre-assembled, I appreciate having had to put this awesome bike together as it gave me a better understanding of all its features and how to manipulate it for safe handling. The packaging was super. Everything was securely in place with plastic and foam protection. No damage was found from distributor to my home. Walmart shipped via UPS packaged in a box. I am very happy with this product and, would recommend to my family and friends.The quality for the value exceeded my expectations and I feel confident you'd be pleased if purchased too.