Return: Once you've accumulated at least 4 liners, you can head to WoolCool's website to print a free, postage paid returns label and send it back to them for reuse. Pretty cool!
Reuse: Keep your next picnic or park beers cool in transit, use as stuffing for a craft project or for shielding your veg patch from frost and slugs.
Dispose: Remove the plastic wrapper and pop the sheep's wool on your home compost heap, or put it in your general waste bin (where it will biodegrade in landfill). Some local authorities will accept it in your garden waste collection, but you'll need to check with them first. As for the plastic wrap - this can be recycled in larger supermarkets (more info below).
Technical info: Made from natural sheep's wool with an MDPE (4) plastic wrap