These beads provide contrast and variety in their various shapes and sizes, leading to a demanding and intense form of stimulation. Courage and experimentation are well rewarded SINFIVE stimulation beads offer certified physical compatibility, are flexible, easy to take care of and have a neutral odour. The different sizes and structures of the individual elements guarantee a wide variety of vaginal and anal stimulation. On purchasing a SINFIVE product, you receive a one year guarantee from the manufacturer. You also have the opportunity to extend the guarantee period by four years to a total of five years. Alterno boasts an overall length of 18 inches incl. handle and an insertion length of approx. 15 Inches