This portable pullup bar uses PP and PA materials, providing wear resistance and strength for repeated, longlasting use. Durable construction: PP and PA materials are wear resistant and strong, designed for longterm reliability in your fitness routine. Easy to install and compatible: Can be easily installed on a door frame and fits door frames with a thickness of 10 cm (3.94 in) to 16.5 cm (6.5 in), offering convenient access for training. Versatile and stable: A versatile design suitable for both home and outdoor workouts, with nonslip stability to support safe training sessions. Compact and portable: Size 23 cm x 25 cm x 2.5 cm (9.06 in x 9.84 in x 0.98 in). Its compact, lightweight structure is easy to carry and does not take up much space. Use scenarios: Doorway pullups at home or in dorms/apartments with limited space. Outdoor workouts in parks or yards where gym equipment is unavailable. Travel or hotelroom workouts for convenient, onthego training.