With flight range of 15 - 20 feet the Duncan Indoor Booma is soft enough to throw safely indoors. Part of the perfect boomerang range the Indoor Booma is made from soft and safe Memorang foam to keep its shape. Do you ever wonder if its actually going to come back? With Duncan each Booma can be tuned to change the range and make sure it comes back. The flexible tri-blade design ensures a stable and accurate return flight every time.