Tito Vacci Sport T-shirt Our 6 oz. SUPIMA® cotton t-shirts are the world’s finest wholesale blank tee, period. Made of ELS (Extra Long Staple) American Grown SUPIMA® Cotton grown in California under strict, quality-controlled guidelines, the hand and feel of this shirt are extraordinary. The smooth, soft feel is what we are famous for. In the world of bulk luxury blank tees, these are incomparable in just about every way possible.