The Xterra 
                                TRX3500 is part of the
                                Treadmills test program at
                                Consumer Reports.  In our lab tests, Treadmills
                                models like the TRX3500 are rated on multiple criteria, such as those
                                listed below.
                            
                                                        
                                Ergonomics:
                                A high score means the treadmill’s design, like belt size and width, accommodates a wide range of body shapes and sizes. A top-scoring model supports higher weight limits and comfortably fits users with both smaller and larger bodies."
                            
                                                        
                                Construction:
                                A high score means the treadmill is built for durability and resists wear. Our testing simulates six months of use. A top-scoring model should last longer with consistent performance."
                            
                                                        
                                Ease of use:
                                A high score means the treadmill is easy to operate, with well-designed controls and a clear display. A top-scoring model typically offers more built-in programs and intuitive features that make workouts easier to start and manage."