I have searched 5 years for a really good set of outdoor furniture and this sofa fits the bill!   I ordered two sofas vs. sofa and loveseat due to the price almost being the same.    The cushion material is firm and at least 6 inches and you don’t sink to the frame in 10 minutes.    It stays firm and comfortable! The material is supposed to be weather resistant but I did purchase covers separately so I could help it last longer.   I am very very pleased.