When looking for silk products, in addition to determining whether the silk is cruelty-free, you may also want to keep an eye out for terms such as charmeuse and momme. Charmeuse is a type of weaving style that creates silk sheets with a shiny and a dull side. Momme is the measure used for the weight of 100 yards of silk (1 momme (m/m) = 4.3056 g / square meter). This measure ranges from 6-30. Silk sheets that are assessed around 19 momme are a good option in terms of affordability, quality, and strength.