Jam Jar Covers and Wax Discs - Set of 24 2 "Be warned: Plastic covers not cellophane!" Ms Wood 16 July 2019 This product looks nice - the wax disks are fine, and the paper covers are quite cute - but the clear covers are polypropylene - rather than traditional cellophane. They are not large enough to easily fit standard jam jars, and the material is thicker and more difficult to seal around the top of the jar. Condensation builds up on the underside of the cover as the jam cools. The polypropylene that the covers are made of is not recyclable. Lakeland were kind enough to give me a refund when I pointed this out, but this kit is not suitable for any serious jam maker.