HERE AT 75/78 PRODUCTIONS WE USE ALSTYLE APPAREL AND ACTIVE WEAR WHITE TEES FOR PRINTING OUR PRODUCTS. THESE TEES ARE 100% COTTON PRE SHRUNK WHITE TEES AND ARE A VERY QUALITY TEE. IF YOU WOULD LIKE TO SUPPLY YOUR OWN TEE THAT IS PERFECTLY FINE WITH US. WE JUST ASK YOU TO MAKE SURE THEY ARE 100% COTTON AND IT IS OF COARSE WHITE BECAUSE WE ONLY PRINT ON WHITE.