Cotton provides absorbency and a soft hand, while polyester adds durability and wrinkle resistance. Cotton and rayon layers achieve the necessary absorbency. Astronauts wear trunklike diapers called "Maximum Absorbency Garments", or MAGs, during liftoff and landing. Generally, smoother texture and higher absorbency equates to higher conductivity. Tampons are available in several absorbency ratings. Low absorbency allows the fiber to dry quickly. Solution polymers offer the absorbency of a granular polymer supplied in solution form. Important parameters for fluff pulp are bulk and water absorbency. It is similar to linen in absorbency, density, and microscopic appearance. Important parameters for beer mats are water absorbency, wet rub and printability. Silk's absorbency makes it comfortable to wear in warm weather and while active. NASA created the name Maximum Absorbency Garment to avoid using trade names. In 1988, the Maximum Absorbency Garment replaced the DACT for female astronauts. In cosmetics, it is useful for its light-diffusing properties and natural absorbency. The regular absorbency continued while the overnight absorbency was now called "Maximum Protection".