All Prism Pak Brand clear poly tubing is made of 100% virgin Low Density Polyethylene (LDPE) resin that meets FDA/USDA specifications. We ensure our poly tubing to at the exact specifications to ensure even wall thickness and unrivaled clarity. Neatly wound on a 3" core with 1" diameter core plug. Can be heat sealed, tied, stapled or taped shut. Made in the USA. Usually ships in 24 hours