The GPIW„ Biner Cotton/Poly T-Shirt is our homage to the tool that's kept us hanging in there since 1973. Original artwork by Neil Hubert is screen-printed on exceptionally soft fabric blend of post-consumer recycled polyester and Texas co-op organic cotton. Screen-print inks are PVC- and phthalate-free. Taped shoulder seams for comfort and fit retention. Sturdy side seams keep garment from twisting and shrinking when washed.