Space Mountain at Walt Disney World’s Magic Kingdom has a height requirement of 44 inches (112 cm), but it does not have an official maximum weight or height limit. However, the ride's "single-file" seating arrangement (where three riders sit one behind the other in a single rocket) is notoriously tight and narrow. The restraint system consists of a T-shaped lap bar that must be able to lock securely over your lap. Very tall guests (above 6'4") may find the legroom extremely restricted, often requiring them to sit with their knees tucked in a specific way. For guests with broader shoulders or larger midsections, the side-walls of the "rocket" can feel quite confining. If you are concerned about fit, there is a test seat located at the entrance of the attraction where you can check the restraint and space before joining the queue. Disney cast members are trained to assist with discreet "fit checks" to ensure that the lap bar can be safely engaged, which is the ultimate determining factor for whether you can experience this high-speed journey through the dark.