FENDERS SERIE "R" cylindrical made of very high density foam made watertight by a polyethylene coating, virtually indestructible.Outer casing in sturdy TEMPOTEST "PARA" (100% polyester) fabric, anti-slip and indelible colors, easily removable and washable. (Patented models) FENDERS SERIES "R" COLOR BLUE FENDER R4 cm 35x150 (for boats over 18 meters)