From the Dr. Seuss Clothing Collection. Dr. Seuss Thing 1 And Thing 2 Loose Run Yellow Girl's T-Shirt. Featured on the front of this yellow t-shirt are Thing 1 and Thing 2 racing across the shirt with white and orange shaped stripes. Due to the heating process to make the shirt there may be a slight irregularity on the paint where the sleeves and neck have been sewn. Made of 100% soft and cozy cotton, tagless for comfort.