Medico-technical examined brand by "Fröhle" for local under-pressure treatment of the penis. Protected by the patent office! Complete set for specific advanced training of the penis. Brings immediatly more stiffness and strength in the penis. Transparent, anatomically shaped vacuum-cylinder (21 cm long and Ø 5 cm) complete with plug sleeves, hand pump and pressure regulator. Material: PVC/PP.