Stretchy stuff is a type of material that can be stretched and then return to its original shape. LATEX, Elastomer, Lycra, and Elastics are all examples of stretchy stuff. LATEX is a milky sap from rubber trees that is used to make rubber products. Elastomer is a synthetic rubber-like material that is used in many products. Lycra is a brand name for a type of spandex fabric that is often used in clothing. Elastics are bands of rubber or plastic that are used to hold items together.