The seat size is 40.9''W x 20.1''D The backrest height is 20.1'' the seat is wide enough for two people to sit intimately. Weighs 66 Lbs, thickened material, 1200 lbs weight capacity much easier maintenance compared to wooden swings. Made of Hdpe (High-Density Polyethylene); will not crack, peel, or rot when exposed to the elements; great for outdoor use