Miniature seed cotton modules were formed in the Brazos Valley (BV) and Southern High Plains (SHP) of Texas during the 2004 cotton season for determining module cover performance. The goals of testing in the BV were to determine lint quality after extended storage periods during rainy seasons and ability of module covers to prevent water penetration. The goal of testing in the SHP was to determine effects of wind exposure on new module covers. Seed cotton samples taken from test modules were ginned and lint samples were tested with HVI and AFIS testing equipment. Module covers were tested before, during and after extended periods of use in BV and SHP. Results will be reported and recommendations for producers and ginners will be formed.