What are the features and specifications of the Mongoose Excursion mountain bike?

The Mongoose Excursion mountain bike features a durable steel frame, front suspension fork, 21-speed Shimano rear derailleur, twist shifters, and alloy rims. It is designed for off-road trails and rough terrain, with a comfortable padded seat and adjustable seat post. The bike also has front and rear linear pull brakes for reliable stopping power.