Folded, One-At-A-Time Dispensing Can Liners. The polyethylene can liner of choice for heavy duty uses. Big City® liners are made of resins that tend to be thicker in gauge and offer additional stretch. All repro resins used in Big City liners must meet our stringent quality standards. We combine this repro with specially formulated linear low density resins which results in a value priced, high performance can liner. Available in black for maximum opacity and also in clear for specialty applications.