Realistic Hard Plastic Prop, Hollow Inside. Approximately 3 Inches Tall, 6 Inches Long and 3 1/2 Inches Deep. A perfect size for small set pieces and storage - your props will never have to look too big or too small for the occasion! No more fretting over prop dimensions - rest easy knowing you'll have the perfect prop for any background or set! With this realistic brain toy, you'll be ahead of the game - prop-erly prepared! (It's a no-brainer)