CYL - very flexible, medium-dutyESD - very flexible, medium-dutyPCL - very flexible, medium-dutyPCS - very flexible, heavy-dutyPCSL - highly flexible, medium-dutyPEL - highly flexible, light-duty, softPIS/PIH - hghly flexble, medium & heavy dutyPOS - highly flexible, medium-dutyPUE - highly flexible, medium-dutyPVD - pliable, medium-dutyVAM - flexible, heavy-dutyVAML - flexible, medium-dutyVCS - flexible, heavy-dutyVOH - pliable, very heavy-dutyPLR - flexible, medium-wall