Weatherproof PP Material: Crafted with UV-resistant polypropylene, this rocking chair withstands intense sunlight, heavy rain, and extreme temperatures without fading or cracking. Unlike metal or wood, it resists rust, rot, and corrosion perfect for outdoor use Enhanced Back Support: Two pillars are added to the backrest to lock firmly with the backrest through the slot structure, which greatly improves the backrest's support ability and ensures the overall sturdiness of the rocking chair Size and Weight Bearing Capacity: Our heavy duty rocking chair seat measures 17.32 “D x 19.7 ”W and can hold up to 380LBS. Accommodates people of all sizes Zero Back Pressure Rocking Design: The reclining backrest cares for your spine with a gentle 15° tilt that reflects the natural curve of a relaxed posture. Reduces lower back stress by redistributing weight to the shoulders and hips compared to rigid 90° upright seats. The extra-wide base and low center of gravity eliminate rocking, so you can read a book or take a nap without worry Safe Use Exprience: The chair keeps the center of gravity in the center of the chair during use based on rigorous rocking and weight tests. The entire chair is carefully polished and all parts are smooth to the touch. The edges and corners of the armrests are rounded to prevent bumping