The front and rear tires of this ONE-NL205 Deluxe have been replaced from urethane to air tires. The removed handbrake and bell from the conversion are included, so you can always return it to its original condition. It has durable 205mm (8.07 inches) large polyurethane tires for safe riding. It has an ergonomically designed wide handle that is easy to grip for stable balance. It has a suspension function that reduces vibration and absorbs shock with the elasticity of the tires for a smooth ride. It can be quickly and compactly transformed, making it easy to carry and saves space for storage.