It is small maybe 8 inches long by 7 inches high. Just guessing not near the toy to measure. Obviously when all the spikes are sticking in the shell it is larger. Spikes are about 4 inches approx. All twelve spikes store neatly inside the shell though. It is a great toy and has been a hit with child starting about ten months. Now at 14 months she is learning to put spikes in the shell herself. Highly recommend this.