The reason disposable coffee cups are so damaging is that they have a plastic lining on the inside that does not easily biodegrade.

Even many disposable cups that claim to be recyclable would have to be put through specific heat treatment (which rarely actually happens), so they usually end up in landfill or the ocean.

Environmentalists estimate coffee cups to be the second largest contributor to litter waste after plastic bottles.

Please spread the word and while doing so, feel free to use a condescending tone while drinking from your Smuggy cup.