Elastane is the same as Spandex. Both are yarns that are knit/woven into fabrics, and contribute stretch and recovery properties to the fabric. Spandex is DuPontâs brand, elastane is the generic name.
In Latin 'Libra' are the symbol for the scales, hence the use of lb for weight (and lbs for the multiple),
1 lbs = 15.999982030208 oz Pounds Definition The pound is a unit of weight in a number of different systems, including various systems of units of weight that formed part of English units, Imperial units, and United States customary units.