A must-have for behavior analysts, educators, and advocates! This comfy sweatshirt features the phrase “Behavior Goes Where Reinforcement Flows” — a reference to the power of positive reinforcement. Features Gilden 18000 Ideal for any situation, a unisex heavy blend crewneck sweatshirt is pure comfort. These garments are made from polyester and cotton. This combination helps designs come out looking fresh and beautiful. The collar is ribbed knit, so it retains its shape even after washing. There are no itchy side seams on these sweaters. .: 50% cotton, 50% polyester .: Medium-heavy fabric (8.0 oz/yd² (271.25 g/m²)) .: Loose fit .: Sewn-in label .: Runs true to size Care Instructions Machine wash: cold (max 30C or 90F); Do not bleach; Do not tumble dry; Do not iron; Do not dryclean. *It is recommended to wash inside out and hang dry to best preserve the quality of the print*