Common upholstery materials for navy blue benches include polyester and polyester canvas, faux leather (polyurethane), and other 100% polyester fabrics. Cushion fills are most often polyurethane foam or 100% foam.
Reported weight capacities vary by item. Examples in the results range from about 220 pounds up to 600 pounds, with several listings showing common values such as 250 or 300 pounds. Note that some listings do not specify a capacity.