The Delta-13 t- shirt has the blueprint of the Delta-13 Elite billiard rack on the back along with our patents in the U.S., Europe and Japan.  Our aerospace Delta-13 logo is placed on the left bicep and the front reads “The True Triangle Delta-13”. The Delta-13 T-Shirt is 100% cotton and comes in sizes; small, medium, large, x-large, xx-large, xxx-large.  Made in the U.S.A.