The frame: The ZÜCA sport frame is 18" tall, 14" long, and 10" wide not including the wheels, and 13" wide with the wheels. The ZUCA Sport frame is made primarily of aluminum which makes it very light, strong and recyclable. Even the metal in the telescoping handle is aluminum. The ZÜCA Sport is designed to hold a great deal of weight, and we have stress tested it under controlled conditions to 640 lbs with no failures. Please don't try this at home. The ZÜCA is safely rated at a 300 lb capacity.

About the handle: The handle telescopes to an adult-comfortable height of 38", and is unique in itself. This is one of the most durable and reliable handles available and we chose it to match the durability of the ZÜCA frame. You will notice when the handle is extended there are groves or ridges in the telescoping tubes. These are not decoration. The ridges provide channels for grit that would otherwise get caught between the handles mating surfaces and cause it to jam. In addition, the aluminum is hard (architectural grade) anodized which further reduces jamming. The telescoping guides are Nylon 6. This is a wonderful material that is soft enough that it will not damage the surface of the tubing, but is hard enough that the grit will not embed itself in the plastic. You will also notice that there is a little play in the mating surfaces, again to reduce the chance of jamming. The tubing is rectangular to provide better resistance to bending than a round or oval tube, and the aluminum is alloyed and heat treated to be very hard and more resistant to bending or denting.

The insert bag: ZÜCA makes the bags from premium 600 denier polyester that is coated on the inside with vinyl to improve water resistance. The bag is water resistant to a point, but should not be left out in a steady rain with stuff inside that should not get wet. We use a very strong type of Velcro (it comes in different adhesive levels) so that the bag will not accidentally come undone due to the interior load pulling on it.

The wheels: The wheels are scooter wheels. We make our own however so that we can control the quality of the urethane in the wheel. The flashing mechanism uses no batteries and is powered by a small generator or "magneto" inside the wheel. The magneto rotor is in the hub and contains small coils of wire wrapped around steel plates, which are connected to the LED's. As the plates pass the magnets in the stationary armature, a small burst of electricity is generated and the LED flashes. The faster you go, the brighter it gets.

And what's up with the upper wheels? They are there to make curbs and stairs easy and eliminate the bang scrape sound. They don't light up, so if you want to be stealth you can switch uppers for lowers.

The little plastic feet: Ok, so what right? But ask anyone with a nice wood floor and they will tell you that they hate stuff that scratches the floor. The feet on the front of your ZÜCA are made of Nylon 6 like the handle guides. Nylon 6 will not scratch the floor and will also resist grit and gravel impregnation that would make a mess of your floor.

The hardware: The ZÜCA Sport is bolted together with rust resistant Zinc plated screws, with shake proof aircraft nylon lock nuts. We had the choice of riveting or bolting. The problem with riveting is that over time rivets loosen. The problem with bolting is that over time bolts loosen. We licked that problem by putting the aircraft nuts on every screw, and besides did you ever try to tighten a rivet.