Elastane in Clothing

Stretch can come from an elastic fiber, a knitted structure, or a flexible material with a different chemistry. Elastane, spandex, and Lycra terminology should be distinguished from fabric names such as jersey. Checking the composition alongside the textile construction explains more than assuming that every stretchy garment contains the same ingredient.

Several names for a related material

Elastane is the generic name associated with highly elastic synthetic fibers, also called spandex. Lycra is a familiar branded name in this group. The source describes a polyurethane-based material whose chief role in apparel is elasticity, rather than the bulk or surface character supplied by many other fibers.

Elastane in Clothing: Elastane Adds Stretch to Other Clothing Fibers

Small percentages can matter

Elastane is commonly blended with cotton, nylon, or other materials instead of making up an entire garment. That helps explain why a fabric can feel mostly like its main fiber while still stretching. The percentage on a composition description is useful, but the finished weave or knit also affects how the cloth moves and returns toward its original form.