100% Polyester For those who like brain, oligodendrocytes, synapse, chemical messengers, neurons, psychology, neuroscience, glia, neurotransmitters, orexin, hypocretin, dopamine, serotonin, norepinephrine, gaba, neurotensin, glutamate, psychology, oxytocin, or prolactin. What a great design for the neuroscience major, social psychology major, biopsychology student, neurology student, neurobiology student or psych major. This design is great for the mother, father, grandmother, grandfather, niece, nephew son daughter. 100% spun-polyester fabric Double-sided print Filled with 100% polyester and sewn closed Individually cut and sewn by hand Spot clean/dry clean only