Premium Monthly Mystery Tees. Here at Shippa Shirt, we are committed to the highest standards of quality. We were simply tired of the lack of premium graphic tee options. This is why we came up with a T-shirt product to surpass all other T-shirts. Our team of artists collaborates each month to deliver the best mystery designs to your door. Full Sublimation, ink is dyed directly into the fabric for a natural feel with zero fade. Photo-quality graphics. Fitted, microfiber polyester that feels like cotton, light and breathable . Unique graphics that can’t be found anywhere else. Each monthly design is printed only once. 100% made in the USA. 100% awesome!