These CRL Cork Non-Adhesive Shipping Pads are laminated with cork instead of sponge, therefore they are firmer and will not compress like sponge. This makes them excellent for use with heavy or large stacks of glass. Adhesive cleanup is eliminated since CRL Cork Non-Adhesive Shipping Pads peel off without leaving any residue. They are even reusable if kept clean! Available in two ways: On rolls of 1,000 pre-cut pads, or on bulk rolls for volume users.