Pretium 2-stage PET Cosmo Rounds are manufactured using the 2-stage (reheat and blow) molding process. The 4oz, 6oz and 8oz bottles have the same dimensions and overflows as the single-stage PET Cosmos manufactured in other locations. We have two styles of 32oz PET Cosmos; the standard version runs in Cleveland, Ohio and the squat version runs in Carrollton, Texas.