I ordered this doggie stroller from Amazon and Aosom Direct on Sunday, May 18, 2014. I received it on Tuesday, May 20, 2014. Amazing turn around on this product! It was packed securely in the box and was not damaged in shipment.This doggie trailer / stroller is so well made and easy to put together! I had this assembled and sitting on its wheels in two hours. Instructions are easy to use. Wiggle the wheels to lock them into place.It includes a dual safety system. A hand brake and manual system that is easy to install to keep this from moving after you get to your destination. It also has a safety flag to insert on the stroller.It is roomy. My dog is 12 pounds and a tall long body Chihuahua and he can roll over in any direction in this stroller. Luxurious! I could easily fit two dogs in here or one medium dog in here. I think maximum doggie weight is 20 lbs.The wheels are soft rubber and huge to stabilize the stroller. The powered coated steel frame is light and easy to lift when converting from a trailer to a stroller. The black and white fabric is well designed and is gender neutral for any dog. The fabric is easy to see and has built in reflective pieces. The handlebar will adjust easily to any desired height and the brake system is pre-threaded thru the stroller. The front wheel can be manually locked to keep the wheel in one position and manually unlocked to allow the wheel to turn in any direction. The steel frame used to anchor the front wheel is well designed. The trailer arm stays locked down and hidden underneath the unit when not in use. The spring locks and steel pins are made of high quality steel and easy to insert and remove at any time. The trailer hitch used to lock the unit onto a bike is used with a standard nut to secure it to your bike. The trailer hitch also includes a second safety system to attach the trailer arm onto your bike and it is easy to lock and unlock at any time. My bike uses a quick release system on my front and rear tires. I am heading to the bike shop today to get a longer quick release to use on my rear bike tire. Bike Shop explained over the phone it is easy to install and use with the trailer arm for the doggie stroller. What else?The interior of the unit is pretty swank and easy to wipe down to keep clean. The doggie trailer / stroller has roll cage built into it and must be locked into place before using. This secures with a steel pin and a spring lock. There is also a lease restraint to tie your dog to inside of the doggie stroller. It has a lightweight mat for your doggie to sit on inside of the stroller. I suggest that you buy a lightweight mat that is more comfy for your doggie to use to protect their joints during the ride. If wheels are attached to the front of the stroller and you want to use the trailer arm simply place the wheels onto the rear of the stroller and lock them into place.Instructions are easy to use and include pictures. Storage bag on the doggie stroller. If it rains there is an plastic rain shield to use. Stroller also has perforated ventilation flaps that are located on the front and top of the unit.When it is put together you can easily take it apart at anytime. It is built to fold back down to store flat! Yay! Into my storage room it goes during the winter. It fit thru my front door fully assembled with the wheels installed on the stroller. I then simply rolled down the three flights of stairs to the parking lot of my condo. Take a bike tire pump and the instructions with you to use on the road.I love this doggie trailer / stroller! Now, I can bike or walk him to any park no matter the distance and my doggie will stay comfy to run and play when we get to the park.