How it Works: Attached to the front of the mug is a pipe where you can pack your 'bowl' and light it. The smoke filters up the hollow handle to the mouthpiece on the top.Mug Features:Made from ceramicMatte black with white inside and white lettersMicrowave and dishwasher safeRecommended for adult use onlyPackaged in a full-colour gift boxSmoke and drink coffee from the same mug!A great novelty gift for adults