Nex2u Bicycle/E-Bike Sidecar Large body | 5052 aircraft grade aluminum body/shell | 32"x18.5"x14" A36 low carbon steel frame and universal mounting bracket system 20" aluminum wheel and hub | Maintenance free sealed bearings 20" multi surface pneumatic tire for traction on paved or dirt trails | Reflective stripe for increased visibility Innovative + Stylish Design For more than a decade we've been designing and producing bicycle and e-bike accessories. Over the last 3+ years we have developed, and and continually refined our bicycle sidecar products. We have met our goals for universal bike compatibility, high quality construction, innovative features, and a safe and fun rider experience. With the Nex2u sidecar you'll be the envy of everyone on the bike path! Durable and Corrosion Resistant Fully powder coated aluminum body and low carbon steel frame to protect from the elements.. Look forward to enjoying rides with your road dog for years to come. Comfortable and Smooth Riding Experience For You and Your Pet Spacious body/shell allows for plenty of room for your pet. Multiple safety harness D ring attachment points. Adjustable, mounting hardware allows the sidecar to be mounted level on any sized bike from 20" BMX style bikes up to 29" wheel bikes. The attachment method allows the bike to lean and still ride like a bike while keeping the sidecar stable and level. (An alternative mounting configuration will be available in the future. This optional accessory will provide a more stable trike-like riding experience.) Note: removeable back door latches do not come standard and will have to be purchased separately.