Machine wefts are made by merging two wefts together. Each weft is first made by machine then machine sewn together to become one weft. This is also how “back to back” colors are created. Although the machine made weft is not the thinnest of wefts, Bohyme’s Machine Wefts are still much finer and constructed much stronger than most other brands. All the packages of machine weft hair weigh 4oz/110-114 Grams.