This screen printed t-shirt features an original illustration showcasing a tree split into sections, with detailed labeling & mathematical formulas for photosynthesis, aerobic respiration, & tons of other tree related grunge! 1 Color Screen Print on our Premium 60/40 Blended Fabric T-Shirt - Silk All our inks contain no metals or harsh chemicals. - Screen Printed neck label. Tagless labeling - 32 Singles - 4.3 oz. - 60/40 combed ringspun cotton/polyester - Side-Seamed - Pre-Shrunk SIZESMLxL2xL (INCHES) Chest:: :34-3638-4042-4446-4848-50 Waist:: 30-3232-3333-3436-3840-42 HOW TO MEASURE PLEASE SEE LAST PHOTO. All shirts are packaged with care & come with tracking number. Thanks so much for checking out our shop! Men’s Tri-Blend T-Shirt - Tree Diagram Screen Printed Nature Themed Men’s/Unisex | Heather Gray