The questions parents ask before booking

Cosmic Slime parties are recommended for ages 4 to 12. Younger kids do great with a little adult help, and tweens still love picking their colors and mix-ins. If your group is outside that range, just reach out and we'll help you decide.

Each party includes about 1 hour of slime-making time. With setup and cleanup at your home, we'll be there 1.5 to 2 hours total, depending on the package you choose.

We travel throughout the Lehigh Valley and surrounding areas — about a 30-mile radius. That covers Allentown, Bethlehem, Easton, Whitehall, Macungie, Emmaus, Nazareth, and many nearby towns. Not sure whether you're in range? Send us a quick message and we'll confirm right away.

Yes. We use a gentle, non-borax activator along with kid-friendly, non-toxic supplies. Aprons are provided for every child, and we keep the workspace safe and supervised throughout the party.

No. 100% of setup and cleanup is on us — we bring the supplies, lay everything out, run the slime session, and leave your space spotless when we're done. All you provide is the room and the kids.

Starter covers up to 5 kids, Deluxe up to 7, and Ultimate up to 10. If you're a little over, it's totally fine — we always bring extra supplies.

Starter is $199, Deluxe is $299, and Ultimate is $399. There are no hidden fees, no add-on charges, and no travel surcharges within the Lehigh Valley.

If you're booking more than 7 days out, a $75 deposit holds your date — the balance is due 7 days before the party. If you're booking 7 days out or less, the full package amount is due up front. Either way, the deposit applies to your total.

Outdoor parties work great in mild weather. If it's cold, rainy, or stormy, we move everything inside your home — a driveway, garage, basement, or living room all work perfectly. Slime doesn't depend on the weather.

Yes — every kid takes home 1 custom slime they made themselves, in their own container. It's usually the highlight of the day for them.