The Pretty Love orgasmic balls are equipped with a support that holds one of the two interchangeable balls of different weight (30/40g). To get better results, start with the lightest ball (the 30g) and as you feel your pelvic floor muscles get stronger, change the ball to the heavier weight (the 40g). Pretty Love Balls are: 100% Silicone soft and luxurious. 4 interchangeable balls, two of 30g and two of 40g. Submersible / Suitable for the shower. Soft bag to store the balls after each use. 1 year warranty. Pretty love balls have a diameter of 3.75 cm and a total length of 15.25 cm including the rope to remove the ball. For maximum performance we recommend using the balls accompanied by a passive cardiovascular exercise, the ideal is to walk between 15-20 minutes a day. Pretty Love manufactures products with high demanding quality standards, all its products are designed in the United States and have a 1 year warranty on technical defects.