Come and see our amazing products. Using a pressure relief ball when stressed is an effective way to release the pressure of work and life. Press hard and then rebound immediately. It is made of PU foam and has many colors. Not only can decompression, but also can be used as a toy for children. 2.48" Diameter. The price includes the shipping cost to ca, QTY over 10000pcs by ocean. Pls confirm further with us if any query about packing info, inventory status and time schedule.