Here’s how you can score a free menstrual cup on Menstrual Hygiene Day

Mark your calendars, friends! May 28th — that’s Sunday, y’all! — is World Menstrual Hygiene Day (MH Day) and what better way to celebrate than to test drive a cleaner, safer, more Earth-friendly method of managing your monthly flow — a menstrual cup — and maybe even score a free sample!

MH Day is a global movement to build awareness about the fundamental role good menstrual hygiene plays in enabling women and girls to reach their full potential. And in honor of the day, Intimina, maker of the world’s first collapsible menstrual cup, is giving away 1,000 Lily Cup Compacts to 500 pairs of besties, in the hopes of syncing cycles the world over with their reusable, ultra-soft silicone cups. (Yes, you heard us. You and your BFF are about to grow evencloser.)

Perfectly shaped to fit your body, Lily Cups collect menstrual flow rather absorb it, respecting your intimate balance and avoiding the vaginal dryness often associated with tampon use. The Lily Cup Compact comes in two sizes to accommodate your lightest and heaviest flows for 10 hours (!) of non-stop protection. Plus, between periods, you can keep your cup in this cute compact, small enough to tuck into your tiniest clutch.

And you’ll need all the room you can get for the money you’ll be saving in tampons. According to Intimina, the average woman will use 12,000 tampons over the course of her lifetime. That’s, like, $3,000! Enough for a family holiday. Or a jet-ski. Yeah, a jet-ski.

More importantly, by making the change, you’ll be showing Mother Earth some love — 12,000 tampons times 126 million women in the United States alone equals enough tampons to exceed the height of the Empire State Building if they’re placed end-to-end, not once, but three times. What a waste!

Enter to win here — and see you on the other side of the moon!