View the SLS Materials Guide to Find the Material for You Learn about available SLS materials, their properties, available colors and printer compatibility at a glance. SLS Infographic DuraForm FR1200 (SLS) Learn more CastForm PS (SLS) Learn more DuraForm Flex (SLS) Learn more DuraForm TPU Elastomer (SLS) Learn more DuraForm EX Black (SLS) Learn more DuraForm EX Natural (SLS) Learn more DuraForm GF (SLS) Learn more DuraForm HST Composite (SLS) Learn more DuraForm PA (SLS) Learn more