Strong PC (pelvic floor) muscles play a big role in making sex more enjoyable for both you and your partner, allowing more control over sensation, and giving you the ability to tighten up your sex muscles at will to grip your lover or a toy tighter to bring them (or it) closer to the sensitive vaginal walls. Strong pelvic floor muscles can also help tighten and tone after giving birth, and can help with possible incontinence issues. Once the satin ribbon is undone, and you lift the lid of the gift-ready display and storage box, you'll see 3 curvy shapes, two figure 8's and one smooth round ball. The perfectly round, plush feeling sphere is a beginner ball, it has the lightest weight, at 47g (1.6oz) and largest size, so weaker kegel muscles will be able to hold it in place easily. Next up is a larger double ball with a slightly heavier weight (78g/2.75oz) and a similar plushy feel. You'll need stronger muscles to keep the weightier, tapered shape in place, and that goes for the final, advanced double ball, which has the heaviest weight, at 106g (3.73oz), the smallest size and a harder, sleeker feel. Each Ami ball is made from the highest quality silicone, like all Je Joue offerings, they're made to last and require very little maintenance, just wash well with mild soap and water, and use a good water based lubricant. Detailed use instructions and tips are included.