The anti frost mat is designed to keep your freezer frost free, so you need to defrost it less often, can run the freezer at a more optimal temperature and save energy.
For some reason freezers are still made from material which allows ice to build up.
These frost free liners have a special coating to prevent frost and ice building up.
Install these and as well as greater convenience no more chipping away, or risk of freezer burns, you should be able to adjust the settings to use less power to keep your food at the right temperature.
Also prevents fridge drainage blocking.
Anti frost, frost free freezer mats measure 18.5 in x 9.25 in / 47 x 24 cm.