T-shirts are 100% cotton in light blue. We currently have adult, unisex sizes S, M, L, XL. There will be ½ - ¾” allover shrinkage after initial washing. We plan to order youth sizes, so please let us know if you have interest in this. The digger is Liam’s original artwork, painted this past summer, and the inspiration for or website logo and theme. T-shirts are $25 each (includes shipping).