Made of high quality PE. Qualified to play in sports of ultimate game & competition as championship level discs for ultimate disc competition. 175g, Diameter 10.63" (270mm). Design follows aerodynamics engineering to make it fly far and stable. Easy to toss and catch, balanced for long straight flights, no matter how you catch the ultimate disc. Perfect for giveaways, trade shows, company outings, beach trips, camping trips, picnic dates, recreational actives, and a visit in the park and more.