Captain's chair features 28-oz. marine-grade vinyl that is loaded with UV and mildew inhibitors. Rotational molded seat frame. Padded armrests. High-compression foam padding. Included pedestal will adjust from 12" to 18". Spider mounting plate. Three-year warranty on upholstery. Six-year warranty on frame. 21"H x 23-1/2"W x 24"D; 17-1/2"W (inside).