Easy to install and adjust - Length can be freely adjusted to fit door frames of all widths. To install, release the red rotators and roll up or extend the rod to the desired length. The process is quick and tool-free. Safety upgrade and durable design - The base is upgraded to be larger, more stable, and durable. Increased contact surface helps secure the bar and minimizes any damage to the door frame or wall. Comfortable, non-slip grip - Thickened sweat-absorbing cotton foam provides a comfortable, non-slip grip that stays secure even when your hands sweat during workouts. Strong load capacity and reliable stability - Built with a telescopic pole and high-density threading for solid, stable support. The design emphasizes safety and resilience, and the heavier the setup, the stronger the performance. 2-3 practical use scenarios - Home upper-body training in a doorway: perform pull-ups or chin-ups conveniently without drilling or wall damage. - Apartments or rental spaces: fits door frames of all widths and protects walls and frames with a stable base. - Quick, space-efficient workouts: easy to adjust and store between sessions, enabling short, targeted routines in small living spaces. Specifications and performance highlights - Function: adjustable doorway pull-up bar for pull-ups, chin-ups, and related exercises. - Compatibility: designed to fit door frames of all widths without modification. - Size and adjustment: telescopic pole with adjustable length to suit different door openings. - Material and construction: high-density threaded telescopic pole; base with enlarged contact surface; thickened cotton foam grip. - Performance: safe, stable, and durable with a strong load capacity; designed to maintain integrity and protect door frames during use.