Every home gym should have one. Turn your door frame into a powerful workout station. Chin-ups and pull-ups develop upper body strength and are great for children and adults—adjustable length from 26" to 40" (55–102 cm) to fit most door frames. Sturdy steel construction provides durability and excellent support. For fitness enthusiasts looking for a challenging upper body workout in a minimum space, j/fit doorway bars let you perform pull-ups and chin-ups in any standard door frame. The bar can hold up to an impressive 300 pounds.