Here's what the manufacturer says:
"Soft and flexible, the Aerobie Squidgie disc is fun to throw and catch. Its breakthrough spoiler rim design allows even inexperienced throwers to achieve accurate, stable flights.
Roll it up and toss it in your bag for spur of the moment games of catch. Floats in water."
We just know they're our #1 best selling toy!
Get a couple - you'll be glad you did.