Consists of three different size tree stumps, small stump 8.625" x 8.25" x 4", medium stump 10.25" x 9.5" x 4.4375", and a large stump 113.75" x 11" x 5.28". Each of these tree stump shapes is made of durable plastic with soft non slip surface rings that allow the children to safely experience balance and gain their confidence as they jump from tree stump to tree stump. 6 pieces in a set. Ages 3 and up.