Set of balls with strong stimulating power thanks to the different speeds. The weight is ideal and they are made of silicone for strengthening the pelvic floor muscles with easy recovery. The balls included in the set are made of stainless steel. They are ergonomic and easily adapt for tightening and strengthening the Kegel muscles. Safe for your body, odorless, and phthalate-free. Includes: 3.75 cm silicone balls, 2 cm diameter stainless steel balls, and a vibrator with a speed regulator 5 cm x 2.5 cm.