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),
What pound means. Pound symbol Â£ is a currency sign used in UK. It derives from a capital L, representing libra, the basic unit of weight in the Roman Empire, which in turn is derived from the Latin name for scales or a balance. The pound became an English unit of weight and was so named because it originally had the value of one tower pound (~334 grams) of fine (pure) silver.