The Firevigo Under Couch Blocker is a set of 3 rectangular-shaped adjustable elastic couch blockers designed for pets. Made of durable polyurethane foam and nylon material, these black barriers are easy to clean and flexible for comfortable use. The assembly instructions require attaching the barrier around the sofa legs using hook-and-loop fasteners. This product is perfect for indoor use and adds a soft cushion style to your furniture, providing a secure and cozy spot for your pets to rest.