Promar 5" x 11" White PVC Foam Float Promar floats are high quality, commercial grade floats. Made of compression molded closed cell PVC foam, these floats are tough, durable, puncture resistant, and won't absorb water. These floats are perfect for DIY kayak stabilizers. Multiple functions and long lasting durability make these floats a must have water accessorie. Great for fishing, crabbing docking, securing, watercraft, etc.