The Vevor high back flip-up boat seat set includes 2 camouflage marine seats designed for fishing boats, yachts, and other small watercraft. Each seat features durable PU polyester fabric, thick high-elastic foam cushioning, and a foldable backrest for comfort and space-saving storage. Heavy-duty aluminum alloy hinges and a sturdy PP frame help provide reliable support in marine environments. The seats use a 5.3" x 5.3" bolt hole pattern and include mounting screws and washers for installation on most compatible bases or swivels.