They usually are packed raw and comes frozen or freeze dried up.
Rexene is also a famous material intended for gloves. But still are able to find so many gloves made from this material as these toppers is cheap so I reckon that maybe people dispose them after the use so they can buy new. https://Www.pressadvantage.com/story/66738-phoenix-estate-attorney-libby-banks-pllc-expands-enhances-trusted-legal-services