• Wash your hands;
  • Fold the cup between your thumb and forefinger- many women find that folding in a C shape is easiest;
  • Gently push the folded cup inside your vagina like a tampon. It will sit a bit lower than a tampon, but will be fully inside your body;
  • Allow the cup to open inside your vagina, and ensure that it is fully unfolded by running your finger around the outside edge. It will create a suction which will stop any leaks!

Extra tips:

Using menstrual cups for the first time can be difficult until you get the hang of it. Take your time to get used to your Ruby Cup. Find a comfortable position, be it a crouching position, sitting on the toilet or the edge of your bath. You should try what fits you best and makes insertion most comfortable and easy for you. Breathe slowly and relax. 

There are different folding methods you could try that might help you inserting the cup more easily and without pain. Using a bit of lube can make the insertion easier too.

Have a look here for an easy to use step-by-step guide.