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),
Pounds A pound is a unit of weight commonly used in the United States and the British commonwealth, and originally descended from Roman times. A pound is defined as exactly 0.45359237 kilograms. A long ton is a unit of weight equal to 2,240 pounds. It is no longer commonly used.